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</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../features.html#calendar-and-contact-dav-collection-management">Calendar and Contact (DAV) Collection Management</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../features/caldav-collections.html">CalDAV Collections</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/dav-components.html">DAV Components</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/dav-collection-mgmt.html">DAV Collection Management</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/carddav.html">CardDAV Support</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../features.html#storage">Storage</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../features/mail-spool-partitions.html">Mail Spool Partitions</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/mailbox-metadata-partitions.html">Mailbox Metadata Partitions</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/archiving.html">Archiving</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/quota.html">Quota</a></li>
<li class="toctree-l4"><a class="reference internal" href="../features/single-instance-store.html">Single-Instance Store</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../features.html#load-management">Load Management</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../features/server-aggregation.html">Cyrus IMAP Murder (Server Aggregation)</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../overview_and_concepts.html">Concepts</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#access-control-lists">Access Control Lists</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#working-with-acls">Working with ACLs</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#sample-acl">Sample ACL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#access-rights">Access Rights</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#access-control-defaults">Access Control Defaults</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#access-control-identifier-aci">Access Control Identifier (ACI)</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#negative-rights">Negative Rights</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#calculating-a-users-rights">Calculating a Users’ Rights</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#login-authentication">Login Authentication</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#anonymous-login">Anonymous Login</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#plaintext-authentication">Plaintext Authentication</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#kerberos-logins">Kerberos Logins</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#shared-secrets-logins">Shared Secrets Logins</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#quotas">Quotas</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#working-with-quotas">Working with Quotas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#monitor-and-repair">Monitor and Repair</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#supported-quota-types">Supported Quota Types</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#quota-roots">Quota Roots</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#controlling-quota-behavior">Controlling Quota Behavior</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#mail-delivery-behavior">Mail Delivery Behavior</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#quota-warnings-upon-select-when-user-has-d-rights">Quota Warnings Upon Select When User Has <code class="docutils literal notranslate"><span class="pre">d</span></code> Rights</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#quotas-and-partitions">Quotas and Partitions</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#new-mail-notification">New Mail Notification</a></li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#partitions">Partitions</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#specifying-partitions-with-create">Specifying Partitions with “create”</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#changing-partitions-with-rename">Changing Partitions with “rename”</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#news">News</a></li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#pop3-server">POP3 Server</a></li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#the-syslog-facility">The syslog facility</a></li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#mail-directory-recovery">Mail Directory Recovery</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#reconstructing-mailbox-directories">Reconstructing Mailbox Directories</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#reconstructing-the-mailboxes-file">Reconstructing the Mailboxes File</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#reconstructing-quota-roots">Reconstructing Quota Roots</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#removing-quota-roots">Removing Quota Roots</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#subscriptions">Subscriptions</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#configuration-directory">Configuration Directory</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#log-directory">Log Directory</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#proc-directory">Proc Directory</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#message-delivery">Message Delivery</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#local-mail-transfer-protocol-lmtp">Local Mail Transfer Protocol (lmtp)</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#single-instance-store">Single Instance Store</a></li>
<li class="toctree-l4"><a class="reference internal" href="../overview_and_concepts.html#duplicate-delivery-suppression">Duplicate Delivery Suppression</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#sieve-a-mail-filtering-language">Sieve, a Mail Filtering Language</a></li>
<li class="toctree-l3"><a class="reference internal" href="../overview_and_concepts.html#cyrus-murder-the-imap-aggregator">Cyrus Murder, the IMAP Aggregator</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1 current"><a class="reference internal" href="../../../setup.html">Setup</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="../../developer/compiling.html">Compiling</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../developer/compiling.html#setting-up-dependencies">Setting up dependencies</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#required-build-dependencies">Required Build Dependencies</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#build-dependencies-for-additional-functionality">Build dependencies for additional functionality</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/compiling.html#compile-cyrus">Compile Cyrus</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#default-build-mail-only">Default build: mail only</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#optional-dependencies">Optional dependencies</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#compile">Compile</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html#check">Check</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../installing.html">Installing Cyrus</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#install-cyrus">Install Cyrus</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#optional-components">Optional Components</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../download/installation/manage-dav.html">HTTP modules</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../download/installation/virus.html">Virus Scanner</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#setting-up-syslog">Setting up syslog</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#create-cyrus-environment">Create Cyrus environment</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#set-up-the-cyrus-mail-user-and-group">Set up the cyrus:mail user and group</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#authentication-with-sasl">Authentication with SASL</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#mail-delivery-from-your-mta">Mail delivery from your MTA</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#protocol-ports">Protocol ports</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#cyrus-config-files">Cyrus config files</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#optional-setting-up-tls-certificates">Optional: Setting up TLS certificates</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html#prepare-ephemeral-run-time-storage-directories">Prepare ephemeral (run-time) storage directories</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#launch-cyrus">Launch Cyrus</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#send-a-test-email">Send a test email</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#checking-carddav-and-caldav">Checking CardDAV and CalDAV</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../installing.html#troubleshooting">Troubleshooting</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../download/upgrade.html">Upgrading to 3.6</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#preparation">1. Preparation</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../download/upgrade.html#versions-to-upgrade-from">Versions to upgrade from</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../download/upgrade.html#installation-from-tarball">Installation from tarball</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../download/upgrade.html#storage-changes">Storage changes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../download/upgrade.html#how-are-you-planning-on-upgrading">How are you planning on upgrading?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../download/upgrade.html#do-what-as-who">Do What As Who?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#install-new-3-6-cyrus">2. Install new 3.6 Cyrus</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#shut-down-existing-cyrus">3. Shut down existing Cyrus</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#backup-and-copy-existing-data">4. Backup and Copy existing data</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#copy-config-files-and-update">5. Copy config files and update</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#upgrade-specific-items">6. Upgrade specific items</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#start-new-3-6-cyrus-and-verify">7. Start new 3.6 Cyrus and verify</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#reconstruct-databases-and-cache">8. Reconstruct databases and cache</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#do-you-want-any-new-features">9. Do you want any new features?</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#upgrade-complete">10. Upgrade complete</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../download/upgrade.html#special-note-for-murder-configurations">Special note for Murder configurations</a></li>
</ul>
</li>
<li class="toctree-l2 current"><a class="reference internal" href="../deployment.html">Configuration Guide</a><ul class="current">
<li class="toctree-l3"><a class="reference internal" href="deployment_scenarios.html">Deployment Scenarios</a><ul>
<li class="toctree-l4"><a class="reference internal" href="deployment_scenarios.html#single-server-deployments">Single Server Deployments</a></li>
<li class="toctree-l4"><a class="reference internal" href="deployment_scenarios.html#multi-server-deployments">Multi Server Deployments</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="deployment_scenarios.html#cyrus-murder-server-aggregation">Cyrus Murder: Server aggregation</a><ul>
<li class="toctree-l4"><a class="reference internal" href="deployment_scenarios.html#the-discrete-murder">The Discrete Murder</a></li>
<li class="toctree-l4"><a class="reference internal" href="deployment_scenarios.html#the-unified-murder">The Unified Murder</a></li>
<li class="toctree-l4"><a class="reference internal" href="deployment_scenarios.html#the-shared-murder">The Shared Murder</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="deployment_scenarios.html#cyrus-replication">Cyrus Replication</a></li>
<li class="toctree-l3"><a class="reference internal" href="deployment_scenarios.html#hosted-environments">Hosted Environments</a></li>
<li class="toctree-l3 current"><a class="current reference internal" href="#">Databases</a><ul>
<li class="toctree-l4"><a class="reference internal" href="#overview">Overview</a></li>
<li class="toctree-l4"><a class="reference internal" href="#file-list">File list</a></li>
<li class="toctree-l4"><a class="reference internal" href="#storage-types">Storage types</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="mailbox_creation_distribution.html">Mailbox Creation Distribution</a><ul>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#selection-mode">Selection Mode</a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#special-cases">Special cases</a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#partitions-exclusion">Partitions Exclusion</a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#partitions-usage-data-reset">Partitions Usage Data Reset</a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#mailbox-creation-distribution-through-murder-frontend">Mailbox Creation Distribution Through <code class="docutils literal notranslate"><span class="pre">murder</span> <span class="pre">frontend</span></code></a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#backends-exclusion">Backends Exclusion</a></li>
<li class="toctree-l4"><a class="reference internal" href="mailbox_creation_distribution.html#backends-usage-data-reset">Backends Usage Data Reset</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="known_protocol_limitations.html">Known Protocol Limitations</a><ul>
<li class="toctree-l4"><a class="reference internal" href="known_protocol_limitations.html#pop3-and-mailbox-locking">POP3 and Mailbox Locking</a></li>
<li class="toctree-l4"><a class="reference internal" href="known_protocol_limitations.html#cyrus-imap-pop3-implementation">Cyrus IMAP POP3 Implementation</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="authentication_and_authorization.html">Authentication and Authorization</a><ul>
<li class="toctree-l4"><a class="reference internal" href="authentication_and_authorization.html#client-authentication">Client Authentication</a></li>
<li class="toctree-l4"><a class="reference internal" href="authentication_and_authorization.html#users-and-mailboxes">Users and Mailboxes</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="performance_recommendations.html">Performance Recommendations</a><ul>
<li class="toctree-l4"><a class="reference internal" href="performance_recommendations.html#databases-on-temporary-filesystems">Databases on Temporary Filesystems</a></li>
<li class="toctree-l4"><a class="reference internal" href="performance_recommendations.html#certificates">Certificates</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="storage.html">Storage Considerations</a><ul>
<li class="toctree-l4"><a class="reference internal" href="storage.html#general-notes-on-storage">General Notes on Storage</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#redundancy">Redundancy</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#availability">Availability</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#performance">Performance</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#scalability">Scalability</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#capacity">Capacity</a></li>
<li class="toctree-l4"><a class="reference internal" href="storage.html#cost">Cost</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="supported-platforms.html">Supported Platforms and System Requirements</a><ul>
<li class="toctree-l4"><a class="reference internal" href="supported-platforms.html#building-cyrus-imap">Building Cyrus IMAP</a></li>
<li class="toctree-l4"><a class="reference internal" href="supported-platforms.html#required-software-components">Required Software Components</a></li>
<li class="toctree-l4"><a class="reference internal" href="supported-platforms.html#recommended-software-components">Recommended Software Components</a></li>
<li class="toctree-l4"><a class="reference internal" href="supported-platforms.html#recommended-software-components-enabled-by-default">Recommended Software Components Enabled by Default</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../operations.html">Operations</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../../reference/manpages/index.html">Man pages</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../reference/manpages/index.html#configuration-files">(5) Configuration Files</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/configs/cyrus.conf.html"><strong>cyrus.conf</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/configs/imapd.conf.html"><strong>imapd.conf</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/configs/krb.equiv.html"><strong>krb.equiv</strong></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/manpages/index.html#system-commands">(8) System Commands</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/arbitron.html"><strong>arbitron</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/backupd.html"><strong>backupd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/chk_cyrus.html"><strong>chk_cyrus</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_backups.html"><strong>ctl_backups</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_conversationsdb.html"><strong>ctl_conversationsdb</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_cyrusdb.html"><strong>ctl_cyrusdb</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_deliver.html"><strong>ctl_deliver</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_mboxlist.html"><strong>ctl_mboxlist</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ctl_zoneinfo.html"><strong>ctl_zoneinfo</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cvt_cyrusdb.html"><strong>cvt_cyrusdb</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cvt_xlist_specialuse.html"><strong>cvt_xlist_specialuse</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_backup.html"><strong>cyr_backup</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_buildinfo.html"><strong>cyr_buildinfo</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_dbtool.html"><strong>cyr_dbtool</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_deny.html"><strong>cyr_deny</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_df.html"><strong>cyr_df</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_expire.html"><strong>cyr_expire</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_info.html"><strong>cyr_info</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_ls.html"><strong>cyr_ls</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_synclog.html"><strong>cyr_synclog</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_userseen.html"><strong>cyr_userseen</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyr_virusscan.html"><strong>cyr_virusscan</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyradm.html"><strong>cyradm</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/cyrdump.html"><strong>cyrdump</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/deliver.html"><strong>deliver</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/fetchnews.html"><strong>fetchnews</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/fud.html"><strong>fud</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/httpd.html"><strong>httpd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/idled.html"><strong>idled</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/imapd.html"><strong>imapd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ipurge.html"><strong>ipurge</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/lmtpd.html"><strong>lmtpd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/lmtpproxyd.html"><strong>lmtpproxyd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/masssievec.html"><strong>masssievec</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/master.html"><strong>master</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mbexamine.html"><strong>mbexamine</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mbpath.html"><strong>mbpath</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mbtool.html"><strong>mbtool</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mkimap.html"><strong>mkimap</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mknewsgroups.html"><strong>mknewsgroups</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/mupdate.html"><strong>mupdate</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/nntpd.html"><strong>nntpd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/notifyd.html"><strong>notifyd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/pop3d.html"><strong>pop3d</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/pop3proxyd.html"><strong>pop3proxyd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/promstatsd.html"><strong>promstatsd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/proxyd.html"><strong>proxyd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ptdump.html"><strong>ptdump</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ptexpire.html"><strong>ptexpire</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/ptloader.html"><strong>ptloader</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/quota.html"><strong>quota</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/reconstruct.html"><strong>reconstruct</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/rehash.html"><strong>rehash</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/relocate_by_id.html"><strong>relocate_by_id</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/restore.html"><strong>restore</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/sievec.html"><strong>sievec</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/sieved.html"><strong>sieved</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/smmapd.html"><strong>smmapd</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/squatter.html"><strong>squatter</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/sync_client.html"><strong>sync_client</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/sync_reset.html"><strong>sync_reset</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/sync_server.html"><strong>sync_server</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/timsieved.html"><strong>timsieved</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/tls_prune.html"><strong>tls_prune</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/translatesieve.html"><strong>translatesieve</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/systemcommands/unexpunge.html"><strong>unexpunge</strong></a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/manpages/index.html#user-commands">(1) User Commands</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/arbitronsort.pl.html"><strong>arbitronsort.pl</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/dav_reconstruct.html"><strong>dav_reconstruct</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/httptest.html"><strong>httptest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/imtest.html"><strong>imtest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/installsieve.html"><strong>installsieve</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/lmtptest.html"><strong>lmtptest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/mupdatetest.html"><strong>mupdatetest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/nntptest.html"><strong>nntptest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/pop3test.html"><strong>pop3test</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/sieveshell.html"><strong>sieveshell</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/sivtest.html"><strong>sivtest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/smtptest.html"><strong>smtptest</strong></a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/manpages/usercommands/synctest.html"><strong>synctest</strong></a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../reference/admin.html">Administrator Guide</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../reference/admin.html#architecture">Architecture</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/architecture.html">System Architecture</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/admin.html#management">Management</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/locations.html">File & Directory Locations</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/ports-sockets.html">Ports and Sockets</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/access-control.html">Access Control</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/quotas.html">Quotas</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/sieve.html">Cyrus Sieve</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/backups.html">Cyrus Backups</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/nntp.html">Cyrus NNTP</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/protlayer.html">Cyrus Prot Layer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/sop.html">Standard Operating Procedures</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/eventsource.html">Cyrus Event Source</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/monitoring.html">Monitoring</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/config-mailboxdistribution.html">Mailbox Distribution</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/murder/murder.html">Cyrus Murder</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/nginx-proxy.html">HOWTO: Using an NGINX IMAP Proxy</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/admin/tweaking.html">Tweaking Cyrus IMAP</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../reference/faq.html">Frequently Asked Questions</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../reference/faq.html#features">Features</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/feature-database-backend.html">Which database backend should I use for which databases?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/feature-duplicate-delivery.html">Duplicate Delivery Suppression</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/faq.html#installation-problems">Installation Problems</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/install-compilationerrors.html">Compilation errors about kssl.h and krb5.h on Red Hat Linux/Fedora</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/install-install-help.html">Help! There must be an easier way to get all this going…</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/install-linkerwarnings.html">OpenSSL Version Mismatches</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/faq.html#common-feature-requests">Common Feature Requests</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/r-murder-ha.html">Does the Cyrus Murder support High Availability configurations?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/r-pop3-logging.html">Can I configure pop3d to log amount and size of messages fetched by user?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/r-publicssharedfolders.html">How can I make CyrusSieve work with public shared folders?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/r-subfolders.html">Can I have subfolders not appear under INBOX?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/faq.html#common-operational-questions">Common Operational Questions</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-acls.html">How do I view ACLs on a mailbox?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-annotations.html">What annotations are available?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-configdir-tempfs.html">Is it safe to put <configdirectory>/proc and <configdirectory>/lock on a tmpfs filesystem?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-coredump.html">How to enable core dumps</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-delete-mailbox.html">Why can I not delete a mailbox as an admin user?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-deleted-expired-expunged-purged.html">When is What … Deleted, Expired, Expunged or Purged?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-deliverdb-size.html">Why is deliver.db so large?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-freezes.html">I have multiple imapd-SERVICES configured and experience occasional freezes when I try to log in!</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-gdb.html">How to run gdb on Cyrus components</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-mailbox-doesnotexist.html">Cyrus delivers claims that the mailbox does not exist</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-mixedcase.html">Why is mail being rejected with No Mailbox found due to MiXed CaSe incoming e-mail?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-otherdatabases.html">Can I use MySQL (or another SQL database) as the primary mail store?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-pop3slow.html">Why do POP3 connections take so long, but once the connection is established all is well?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-reconstruct.html">Why does reconstruct -m not work?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-sharedfilesystem-gpfs.html">Shared File Systems GPFS for high availability</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-telemetry.html">How to enable telemetry</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-toomanyprocesses.html">The process count keeps growing!</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-unable-join-environment.html">“unable to join environment” error</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/o-vacation-mailfrom.html">Why does Cyrus set the MAIL FROM address of the sender of vacation responses to ‘<>’?</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../reference/faq.html#common-interoperability-problems">Common Interoperability Problems</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/interop-8bit.html">Why does Cyrus reject 8-bit characters in the headers of my messages?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/interop-barenewlines.html">Why does Cyrus reject messages with “bare newlines”?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/interop-sieve-exim.html">How do I get Cyrus Sieve to play nice with Exim?</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../reference/faqs/interop-slow-delivery.html">Why does mail delivery go slow or hang sometimes?</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="../../../developers.html">Developers</a><ul>
<li class="toctree-l2"><a class="reference internal" href="../../../contribute.html">We need your help</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../developer/documentation.html">Contribute docs</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#overview">Overview</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#documentation-tools">Documentation Tools</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#building-the-files">Building the files</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#submitting-updates">Submitting updates</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#using-github-pull-requests">Using GitHub pull requests</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#patches-through-the-mailing-list">Patches through the mailing list</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#special-tags">Special Tags</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#rfc">rfc</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#cyrusman">cyrusman</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#imap-current-stable-version">imap_current_stable_version</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/documentation.html#conventions-man-pages">Conventions: Man Pages</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#synopsis">Synopsis</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/documentation.html#examples">Examples</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../developer.html">Contribute code and tests</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../developer.html#getting-started">Getting Started</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/process.html">Development Process</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/overview.html">Overview of Cyrus development environment</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/github-guide.html">GitHub guide</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/compiling.html">Compiling</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../installing.html">Installing Cyrus</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/developer-testing.html">Developer Test Environment</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/jmap.html">JMAP support</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer.html#system-files-and-databases">System files and Databases</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/namespaces.html">Namespaces: a developer view</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer.html#resources">Resources</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/libraries.html">Developer Libraries</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer.html#releasing">Releasing</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/releasing.html">Releasing Cyrus IMAP</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/ancient-releasing.html">Releasing new builds of ancient Cyrus IMAP versions</a></li>
</ul>
</li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../developer/cyrusworks.html">Cyrus.Works</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../developer/cyrusworks.html#about-cyrus-works">About Cyrus Works</a></li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/cyrusworks.html#how-it-works">How it works</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../../../developers.html#cyrus-internals">Cyrus Internals</a><ul>
<li class="toctree-l3"><a class="reference internal" href="../../developer/API.html">Cyrus APIs</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/API/cyrusdb.html">CyrusDB API</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/API/cyrusdb2.html">cyrusdb API</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/API/index-api.html">Index API</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/API/mailbox-api.html">Mailbox API</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/thoughts.html">Thoughts & Notes</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/backup.html">Notes for backup implementation</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/bytecode.html">Cyrus IMAP Server: Sieve Bytecode</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/caldav_scheduling_flowchart.html">Cyrus CalDAV Scheduling Flowchart</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/improved_mboxlist_sort.html">Enabling improved_mboxlist_sort</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/notes.html">Cyrus IMAP Server: Notes</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/thoughts/prot-events.html">Cyrus IMAP Server: Prot Events</a></li>
</ul>
</li>
<li class="toctree-l3"><a class="reference internal" href="../../developer/guidance.html">Guidance for Developers</a><ul>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/hacking.html">Cyrus IMAP Server: Hacking</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/internationalization.html">Cyrus IMAP Server: Internationalization</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/locking.html">Cyrus IMAP Server: Locking</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/mailbox-format.html">Cyrus IMAP Server: Mailbox File Formats</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/namelocks.html">Cyrus IMAP Server: Namelocks</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/prot.html">Cyrus IMAP Server: prot layer</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/replication_examples.html">Cyrus IMAP Server: Replication Examples</a></li>
<li class="toctree-l4"><a class="reference internal" href="../../developer/guidance/replication_protocol.html">Cyrus IMAP Server: Replication Protocol v2.4+</a></li>
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<div class="section" id="databases">
<span id="id1"></span><h1>Databases<a class="headerlink" href="#databases" title="Permalink to this headline">¶</a></h1>
<div class="section" id="overview">
<h2>Overview<a class="headerlink" href="#overview" title="Permalink to this headline">¶</a></h2>
<p>Cyrus stores a lot of information. Rather than use traditional relational
database servers, its information is stored on disk in structured files.</p>
<p>These files should only be accessed via Cyrus API, not via a file editor.</p>
<p>File type and file location can be changed by updating the relevant entries
in <a class="reference internal" href="../../reference/manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a>. Files, by default, are stored in the configdirectory.</p>
<p>Changing the <a class="reference internal" href="#storagetypes"><span class="std std-ref">storage type</span></a> for a file will cause
Cyrus to automatically convert the file to the new format.</p>
<p>The data in these files can usually be rebuilt from the mail files themselves by
<a class="reference internal" href="../../reference/admin/sop/reconstructing.html#reconstructing-mailboxes"><span class="std std-ref">running reconstruct</span></a>.</p>
</div>
<div class="section" id="file-list">
<h2>File list<a class="headerlink" href="#file-list" title="Permalink to this headline">¶</a></h2>
<p>One per system:</p>
<ul class="simple">
<li><p><a class="reference internal" href="#mailbox-list-mailboxes-db">Mailbox List (mailboxes.db)</a></p></li>
<li><p><a class="reference internal" href="#annotations-annotations-db">Annotations (annotations.db)</a></p></li>
<li><p><a class="reference internal" href="#quotas-quotas-db">Quotas (quotas.db)</a></p></li>
<li><p><a class="reference internal" href="#duplicate-delivery-deliver-db">Duplicate Delivery (deliver.db)</a></p></li>
<li><p><a class="reference internal" href="#tls-cache-tls-sessions-db">TLS cache (tls_sessions.db)</a></p></li>
<li><p><a class="reference internal" href="#pts-cache-ptscache-db">PTS cache (ptscache.db)</a></p></li>
<li><p><a class="reference internal" href="#status-cache-statuscache-db">STATUS cache (statuscache.db)</a></p></li>
<li><p><a class="reference internal" href="#user-access-user-deny-db">User Access (user_deny.db)</a></p></li>
<li><p><a class="reference internal" href="#backups-backups-db">Backups (backups.db)</a></p></li>
<li><p><a class="reference internal" href="#news-database-fetchnews-db">News database (fetchnews.db)</a></p></li>
<li><p><a class="reference internal" href="#zoneinfo-db-zoneinfo-db">Zoneinfo db (zoneinfo.db)</a></p></li>
</ul>
<p>One per user:</p>
<ul class="simple">
<li><p><a class="reference internal" href="#conversations-userid-conversations">Conversations (<userid>.conversations)</a></p></li>
<li><p><a class="reference internal" href="#counters-userid-counters">Counters (<userid>.counters)</a></p></li>
<li><p><a class="reference internal" href="#dav-index-userid-dav">DAV Index (<userid>.dav)</a></p></li>
<li><p><a class="reference internal" href="#mailbox-keys-userid-mboxkey">Mailbox Keys (<userid>.mboxkey)</a></p></li>
<li><p><a class="reference internal" href="#seen-state-userid-seen">Seen State (<userid>.seen)</a></p></li>
<li><p><a class="reference internal" href="#subscriptions-userid-sub">Subscriptions (<userid>.sub)</a></p></li>
<li><p><a class="reference internal" href="#search-indexes-cyrus-squat-userid-xapianactive-cyrus-indexed-db">Search Indexes (cyrus.squat, <userid>.xapianactive, cyrus.indexed.db)</a></p></li>
</ul>
<div class="section" id="mailbox-list-mailboxes-db">
<span id="imap-concepts-deployment-db-mailboxes"></span><h3>Mailbox List (mailboxes.db)<a class="headerlink" href="#mailbox-list-mailboxes-db" title="Permalink to this headline">¶</a></h3>
<p>This database contains the master list of all mailboxes on the system. The
database is indexed by mailbox name and each data record contains the mailbox
type, the partition on which the mailbox resides and the ACL on the mailbox.
The format of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">Name</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Type</span> <span class="n">Number</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Partition</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">ACL</span> <span class="p">(</span><span class="n">space</span><span class="o">-</span><span class="n">separated</span> <span class="n">userid</span><span class="o">/</span><span class="n">rights</span> <span class="n">pairs</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#flat">flat</a>, <a class="reference internal" href="#skiplist">skiplist</a>, or <a class="reference internal" href="#sql">sql</a>.</p>
</div>
<div class="section" id="annotations-annotations-db">
<span id="imap-concepts-deployment-db-annotations"></span><h3>Annotations (annotations.db)<a class="headerlink" href="#annotations-annotations-db" title="Permalink to this headline">¶</a></h3>
<p>This database contains mailbox and server annotations, including WebDAV
properties. The database is indexed by mailbox name (empty for server
annotations) + annotation name + userid (empty for shared annotations) and each
data record contains the value size, value data, content-type of the data and
timestamp of the record. The format is each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">Name</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Annotation</span> <span class="n">Name</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Userid</span><span class="o">></span>\<span class="mi">0</span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Value</span> <span class="n">Size</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">><</span><span class="n">Value</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Content</span><span class="o">-</span><span class="n">Type</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Timestamp</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default) or <a class="reference internal" href="#skiplist">skiplist</a>.</p>
</div>
<div class="section" id="quotas-quotas-db">
<span id="imap-concepts-deployment-db-quotas"></span><h3>Quotas (quotas.db)<a class="headerlink" href="#quotas-quotas-db" title="Permalink to this headline">¶</a></h3>
<p>This database contains the master list of quotaroots on the system. The
database is indexed by quota root and each data record contains the current
usage of all mailboxes under the quota root and the limit of the quota root.
The format of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Quota</span> <span class="n">Root</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Usage</span> <span class="p">(</span><span class="ow">in</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Limit</span> <span class="p">(</span><span class="ow">in</span> <span class="n">Kbytes</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#quotalegacy">quotalegacy</a> (default), <a class="reference internal" href="#flat">flat</a>, <a class="reference internal" href="#skiplist">skiplist</a>, <a class="reference internal" href="#sql">sql</a>, or <a class="reference internal" href="#twoskip">twoskip</a>.</p>
<p><strong>Legacy Quotas</strong></p>
<p>The legacy quota database uses a distributed system in which each quota root is
stored in a separate file named by quota root and the contents had the
following format in older versions:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">Usage</span> <span class="p">(</span><span class="ow">in</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">></span>\<span class="n">n</span>
<span class="o"><</span><span class="n">Limit</span> <span class="p">(</span><span class="ow">in</span> <span class="n">Kbytes</span><span class="p">)</span><span class="o">></span>\<span class="n">n</span>
</pre></div>
</div>
<p>Newer versions are stored as a DList file with keys for each type of quota, and
values with both usage and limit for each type. A limit value of -1 means no
limit.</p>
<p>The translation to/from this data record format is handled by the quota_legacy
cyrusdb backend.</p>
</div>
<div class="section" id="duplicate-delivery-deliver-db">
<span id="imap-concepts-deployment-db-deliver"></span><h3>Duplicate Delivery (deliver.db)<a class="headerlink" href="#duplicate-delivery-deliver-db" title="Permalink to this headline">¶</a></h3>
<p>This database is used for duplicate delivery suppression, retrieving usenet
articles by message-id, and tracking Sieve redirects and vacation responses.
The database is indexed by message-id + recipient (either mailbox or email
address) and each data record contains the timestamp of the record and the
UID of the message within the mailbox (if delivered locally). The format of
each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Message</span><span class="o">-</span><span class="n">ID</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Recipient</span><span class="o">></span>\<span class="mi">0</span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Timestamp</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">><</span><span class="n">Message</span> <span class="n">UID</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, or <a class="reference internal" href="#sql">sql</a>.</p>
</div>
<div class="section" id="tls-cache-tls-sessions-db">
<span id="imap-concepts-deployment-db-tls"></span><h3>TLS cache (tls_sessions.db)<a class="headerlink" href="#tls-cache-tls-sessions-db" title="Permalink to this headline">¶</a></h3>
<p>This database caches SSL/TLS sessions so that subsequent connections using the
same session-id can bypass the SSL/TLS handshaking, resulting is shorter
connection times. The database is indexed by session-id and each data record
contains the timestamp of the record and the ASN1 representation of the session
data. The format of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Session</span><span class="o">-</span><span class="n">ID</span> <span class="p">(</span><span class="n">multi</span><span class="o">-</span><span class="n">byte</span><span class="p">)</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Timestamp</span> <span class="p">(</span><span class="mi">4</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">><</span><span class="n">Session</span> <span class="n">Data</span> <span class="p">(</span><span class="n">multi</span><span class="o">-</span><span class="n">byte</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, or <a class="reference internal" href="#sql">sql</a>.</p>
</div>
<div class="section" id="pts-cache-ptscache-db">
<span id="imap-concepts-deployment-db-pts"></span><h3>PTS cache (ptscache.db)<a class="headerlink" href="#pts-cache-ptscache-db" title="Permalink to this headline">¶</a></h3>
<p>This database caches authentication state records, resulting in shorter
authentication/canonicalization times. The database is indexed by userid and
each data record contains an authentication state for the userid. The format
of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Userid</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Auth</span> <span class="n">State</span> <span class="p">(</span><span class="n">multi</span><span class="o">-</span><span class="n">byte</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default) or <a class="reference internal" href="#skiplist">skiplist</a>.</p>
</div>
<div class="section" id="status-cache-statuscache-db">
<span id="imap-concepts-deployment-db-status"></span><h3>STATUS cache (statuscache.db)<a class="headerlink" href="#status-cache-statuscache-db" title="Permalink to this headline">¶</a></h3>
<p>This database caches IMAP STATUS information resulting in less I/O when the
STATUS information hasn’t changed (mailbox and Seen state unchanged). The
database is indexed by mailbox name + userid and each data record contains
the database version number, a bitmask of the stored status items, the mtime,
inode, and size of the cyrus.index file at the time the record was written,
the total number of messages in the mailbox, the number of recent messages,
the next UID value, the mailbox UID validity value, the number of unseen
messages, and the highest modification sequence in the mailbox. The format of
each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">Name</span><span class="o">></span>\<span class="mi">0</span><span class="o"><</span><span class="n">Userid</span><span class="o">></span>\<span class="mi">0</span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Version</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Bitmask</span> <span class="n">of</span> <span class="n">Items</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Mtime</span> <span class="n">of</span> <span class="n">Index</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Inode</span> <span class="n">of</span> <span class="n">Index</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Size</span> <span class="n">of</span> <span class="n">Index</span><span class="o">></span><span class="n">SP</span><span class="o"><-</span> <span class="n">of</span> <span class="n">Messages</span><span class="o">></span><span class="n">SP</span><span class="o"><-</span> <span class="n">of</span> <span class="n">Recent</span> <span class="n">Messages</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Next</span> <span class="n">UID</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">UID</span> <span class="n">Validity</span><span class="o">></span><span class="n">SP</span><span class="o"><-</span> <span class="n">of</span> <span class="n">Unseen</span> <span class="n">Messages</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Highest</span> <span class="n">Mod</span> <span class="n">Sequence</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, or <a class="reference internal" href="#sql">sql</a>.</p>
</div>
<div class="section" id="user-access-user-deny-db">
<span id="imap-concepts-deployment-db-userdeny"></span><h3>User Access (user_deny.db)<a class="headerlink" href="#user-access-user-deny-db" title="Permalink to this headline">¶</a></h3>
<p>This database contains a list of users that are denied access to Cyrus
services. The database is indexed by userid and each data record contains the
database version number (currently 2), a list of “wildmat” patterns (per
<span class="target" id="index-0"></span><a class="rfc reference external" href="https://tools.ietf.org/html/rfc3977.html#section-4"><strong>RFC 3977#section-4</strong></a>) specifying Cyrus services to be denied, and a text
message to be displayed to the user upon denial. The service names to be
matched are those as used in <a class="reference internal" href="../../reference/manpages/configs/cyrus.conf.html#std-cyrusman-cyrus.conf-5">cyrus.conf(5)</a>. The format of each
record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Userid</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Version</span><span class="o">></span><span class="n">TAB</span><span class="o"><</span><span class="n">Deny</span> <span class="n">List</span> <span class="p">(</span><span class="n">comma</span><span class="o">-</span><span class="n">separated</span> <span class="n">wildmat</span> <span class="n">patterns</span><span class="p">)</span><span class="o">></span><span class="n">TAB</span><span class="o"><</span><span class="n">Deny</span> <span class="n">Message</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#flat">flat</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, <a class="reference internal" href="#sql">sql</a>, or <a class="reference internal" href="#twoskip">twoskip</a>.</p>
</div>
<div class="section" id="backups-backups-db">
<span id="imap-concepts-deployment-db-backups"></span><h3>Backups (backups.db)<a class="headerlink" href="#backups-backups-db" title="Permalink to this headline">¶</a></h3>
<p>This database maps userids to the location of their backup files. It only
exists on Cyrus Backup servers (compiled with the <cite>–enable-backup</cite> configure
option).</p>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, <a class="reference internal" href="#sql">sql</a>, or <a class="reference internal" href="#twoskip">twoskip</a>.</p>
</div>
<div class="section" id="conversations-userid-conversations">
<span id="imap-concepts-deployment-db-conversations"></span><h3>Conversations (<userid>.conversations)<a class="headerlink" href="#conversations-userid-conversations" title="Permalink to this headline">¶</a></h3>
<p>This file contains all the message-id fields from every email that has been seen
in the past three months, mapping to the conversation IDs in which this message
ID has been seen, and the timestamp when it was last seen.</p>
<p>It also has a records for each conversation ID with details about which folders
have that conversations ID in them, and counts of messages and flags.</p>
<p>Finally there are records for each folder with the counts of conversations in
that folder.</p>
<p>File type can be: <a class="reference internal" href="#skiplist">skiplist</a> (default), <a class="reference internal" href="#sql">sql</a>, or <a class="reference internal" href="#twoskip">twoskip</a>.</p>
</div>
<div class="section" id="counters-userid-counters">
<span id="imap-concepts-deployment-db-counters"></span><h3>Counters (<userid>.counters)<a class="headerlink" href="#counters-userid-counters" title="Permalink to this headline">¶</a></h3>
<p>File format not selectable.</p>
<p>TODO</p>
</div>
<div class="section" id="news-database-fetchnews-db">
<span id="imap-concepts-deployment-db-fetchnews"></span><h3>News database (fetchnews.db)<a class="headerlink" href="#news-database-fetchnews-db" title="Permalink to this headline">¶</a></h3>
<p>File format not selectable.</p>
</div>
<div class="section" id="search-indexes-cyrus-squat-userid-xapianactive-cyrus-indexed-db">
<span id="imap-concepts-deployment-db-search"></span><h3>Search Indexes (cyrus.squat, <userid>.xapianactive, cyrus.indexed.db)<a class="headerlink" href="#search-indexes-cyrus-squat-userid-xapianactive-cyrus-indexed-db" title="Permalink to this headline">¶</a></h3>
<p>This is either cyrus.squat in each folder, or if you’re using Xapian a single
<userid>.xapianactive file listing active databases with tier name and number.</p>
<p>cyrus.indexed.db is used by the Xapian search engine. Its file type
can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#flat">flat</a>, <a class="reference internal" href="#skiplist">skiplist</a>, or <code class="docutils literal notranslate"><span class="pre">zeroskip</span></code> and is
determined by <cite>search_indexed_db</cite> in <a class="reference internal" href="../../reference/manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a>.</p>
<p>The xapianactive file contains a space separated list of tiers and databases within
the tier. The first element is the active tier/database, to which new entries are
added by <cite>squatter -R</cite>.</p>
</div>
<div class="section" id="zoneinfo-db-zoneinfo-db">
<span id="imap-concepts-deployment-db-zoneinfo"></span><h3>Zoneinfo db (zoneinfo.db)<a class="headerlink" href="#zoneinfo-db-zoneinfo-db" title="Permalink to this headline">¶</a></h3>
<p>This database is used for the timezone service and contains records
relating to timezones and their aliases. The database is indexed by
timezone ID and each data record contains the database version
number, a record type, a timestamp, and an optional list of strings
(either aliases for a timezone or the reference timezone for an
alias). The format of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">TZID</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Version</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Record</span> <span class="n">Type</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Timestamp</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Data</span> <span class="n">Strings</span> <span class="p">(</span><span class="n">TAB</span><span class="o">-</span><span class="n">separated</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#flat">flat</a>, or <a class="reference internal" href="#skiplist">skiplist</a>.</p>
</div>
<div class="section" id="seen-state-userid-seen">
<span id="imap-concepts-deployment-db-seen"></span><h3>Seen State (<userid>.seen)<a class="headerlink" href="#seen-state-userid-seen" title="Permalink to this headline">¶</a></h3>
<p>This database is a per-user database and maintains the list of messages that
the user has read in each mailbox. The database is indexed by mailbox
unique-id and each data record contains the database version number, the
timestamp of when a message was last read, the message unique-id of the last
read message, the timestamp of the last record change and a list of message
unique-ids which have been read. The format of each record is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">UID</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Version</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Last</span> <span class="n">Read</span> <span class="n">Time</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Last</span> <span class="n">Read</span> <span class="n">UID</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">Last</span> <span class="n">Change</span> <span class="n">Time</span><span class="o">></span><span class="n">SP</span><span class="o"><</span><span class="n">List</span> <span class="n">of</span> <span class="n">Read</span> <span class="n">UIDs</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default), <a class="reference internal" href="#flat">flat</a>, or <a class="reference internal" href="#skiplist">skiplist</a>.</p>
</div>
<div class="section" id="subscriptions-userid-sub">
<span id="imap-concepts-deployment-db-sub"></span><h3>Subscriptions (<userid>.sub)<a class="headerlink" href="#subscriptions-userid-sub" title="Permalink to this headline">¶</a></h3>
<p>This database is a per-user database and contains the list of mailboxes to
which the user has subscribed. The database is indexed by mailbox name and
each data record contains no data. The format of each record is follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">Name</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="kc">None</span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#flat">flat</a> (default), <a class="reference internal" href="#skiplist">skiplist</a>, or <a class="reference internal" href="#twoskip">twoskip</a>.</p>
</div>
<div class="section" id="search-index-db-list-userid-xapianactive">
<span id="imap-concepts-deployment-db-xapianactive"></span><h3>Search Index DB List (<userid>.xapianactive)<a class="headerlink" href="#search-index-db-list-userid-xapianactive" title="Permalink to this headline">¶</a></h3>
<p>TODO</p>
</div>
<div class="section" id="mailbox-keys-userid-mboxkey">
<span id="imap-concepts-deployment-db-mboxkey"></span><h3>Mailbox Keys (<userid>.mboxkey)<a class="headerlink" href="#mailbox-keys-userid-mboxkey" title="Permalink to this headline">¶</a></h3>
<p>This database is a per-user database and contains the list of mailbox access
keys which are used for generating URLAUTH-authorized URLs. The database is
indexed by mailbox name and each data record contains the database version
number and the associated access key. The format of each record is follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">Key</span><span class="p">:</span> <span class="o"><</span><span class="n">Mailbox</span> <span class="n">Name</span><span class="o">></span>
<span class="n">Data</span><span class="p">:</span> <span class="o"><</span><span class="n">Version</span> <span class="p">(</span><span class="mi">2</span> <span class="nb">bytes</span><span class="p">)</span><span class="o">><</span><span class="n">Access</span> <span class="n">Key</span> <span class="p">(</span><span class="n">multi</span><span class="o">-</span><span class="n">byte</span><span class="p">)</span><span class="o">></span>
</pre></div>
</div>
<p>File type can be: <a class="reference internal" href="#twoskip">twoskip</a> (default) or <a class="reference internal" href="#skiplist">skiplist</a>.</p>
</div>
<div class="section" id="dav-index-userid-dav">
<span id="imap-concepts-deployment-db-userdav"></span><h3>DAV Index (<userid>.dav)<a class="headerlink" href="#dav-index-userid-dav" title="Permalink to this headline">¶</a></h3>
<p>This embedded SQLite database is per-user and primarily maintains a
mapping from DAV resource names (URLs) to the corresponding Cyrus
mailboxes and IMAP message UIDs. The database is designed to have
one table per resource type (iCalendar, vCard, Sieve, etc) with each table
containing metadata specific to that resource type.</p>
<div class="section" id="caldav">
<h4>CalDAV<a class="headerlink" href="#caldav" title="Permalink to this headline">¶</a></h4>
<p>The format of the iCalendar table used by CalDAV is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">TABLE</span> <span class="n">ical_objs</span> <span class="p">(</span>
<span class="n">rowid</span> <span class="n">INTEGER</span> <span class="n">PRIMARY</span> <span class="n">KEY</span><span class="p">,</span>
<span class="n">creationdate</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">mailbox</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">resource</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">imap_uid</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">lock_token</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_owner</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_ownerid</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_expire</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">comp_type</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">ical_uid</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">organizer</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">dtstart</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">dtend</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">comp_flags</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">sched_tag</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">UNIQUE</span><span class="p">(</span> <span class="n">mailbox</span><span class="p">,</span> <span class="n">resource</span> <span class="p">)</span>
<span class="p">);</span>
</pre></div>
</div>
<p>Because CalDAV Scheduling requires the server to locate a resource
by iCalendar UID regardless of which calendar collection (mailbox)
it resides in, the iCalendar table has an additional index as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">INDEX</span> <span class="n">idx_ical_uid</span> <span class="n">ON</span> <span class="n">ical_objs</span> <span class="p">(</span> <span class="n">ical_uid</span> <span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="carddav">
<h4>CardDAV<a class="headerlink" href="#carddav" title="Permalink to this headline">¶</a></h4>
<p>The format of the vCard table used by CardDAV is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">TABLE</span> <span class="n">vcard_objs</span> <span class="p">(</span>
<span class="n">rowid</span> <span class="n">INTEGER</span> <span class="n">PRIMARY</span> <span class="n">KEY</span><span class="p">,</span>
<span class="n">creationdate</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">mailbox</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">resource</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">imap_uid</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">lock_token</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_owner</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_ownerid</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">lock_expire</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">version</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">vcard_uid</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">kind</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">fullname</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">name</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">nickname</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">email</span> <span class="n">TEXT</span><span class="p">,</span>
<span class="n">UNIQUE</span><span class="p">(</span> <span class="n">mailbox</span><span class="p">,</span> <span class="n">resource</span> <span class="p">)</span>
<span class="p">);</span>
</pre></div>
</div>
</div>
<div class="section" id="sieve">
<h4>Sieve<a class="headerlink" href="#sieve" title="Permalink to this headline">¶</a></h4>
<p>The format of the Sieve table used by JMAP and ManageSieve is as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">TABLE</span> <span class="n">sieve_scripts</span> <span class="p">(</span>
<span class="n">rowid</span> <span class="n">INTEGER</span> <span class="n">PRIMARY</span> <span class="n">KEY</span><span class="p">,</span>
<span class="n">creationdate</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">lastupdated</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">mailbox</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">imap_uid</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">modseq</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">createdmodseq</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="nb">id</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">name</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">content</span> <span class="n">TEXT</span> <span class="n">NOT</span> <span class="n">NULL</span><span class="p">,</span>
<span class="n">isactive</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">alive</span> <span class="n">INTEGER</span><span class="p">,</span>
<span class="n">UNIQUE</span><span class="p">(</span> <span class="n">mailbox</span><span class="p">,</span> <span class="n">imap_uid</span> <span class="p">),</span>
<span class="n">UNIQUE</span><span class="p">(</span> <span class="nb">id</span> <span class="p">)</span>
<span class="p">);</span>
</pre></div>
</div>
<p>Because ManageSieve requires the server to locate a resource
by name, the Sieve table has an additional index as follows:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">CREATE</span> <span class="n">INDEX</span> <span class="n">idx_sieve_name</span> <span class="n">ON</span> <span class="n">sieve_scripts</span> <span class="p">(</span> <span class="n">name</span> <span class="p">);</span>
</pre></div>
</div>
</div>
</div>
</div>
<div class="section" id="storage-types">
<span id="storagetypes"></span><h2>Storage types<a class="headerlink" href="#storage-types" title="Permalink to this headline">¶</a></h2>
<div class="section" id="flat">
<h3>Flat<a class="headerlink" href="#flat" title="Permalink to this headline">¶</a></h3>
<p>Only for debugging. The file format is human-readable, but it is
slow for reads and writes, and is easily corrupted.</p>
</div>
<div class="section" id="twoskip">
<h3>Twoskip<a class="headerlink" href="#twoskip" title="Permalink to this headline">¶</a></h3>
<p><strong>Recommended</strong>. A robust implementation of <a class="reference external" href="https://en.wikipedia.org/wiki/Skip_list">Skip List</a>.
Developers interested in the details can find more information at <a class="reference external" href="http://opera.brong.fastmail.fm.user.fm/talks/twoskip/twoskip-yapc12.pdf">these talk slides</a>.</p>
</div>
<div class="section" id="skiplist">
<h3>Skiplist<a class="headerlink" href="#skiplist" title="Permalink to this headline">¶</a></h3>
<p>An implementation of the <a class="reference external" href="https://en.wikipedia.org/wiki/Skip_list">Skip List</a>
data structure. Deprecated in favour of <a class="reference internal" href="#twoskip">Twoskip</a> as it is not robust in
the face of disk failure.</p>
</div>
<div class="section" id="sql">
<h3>sql<a class="headerlink" href="#sql" title="Permalink to this headline">¶</a></h3>
<p>It is possible to store data in a normal relational SQL database. Generally
<a class="reference internal" href="#twoskip">Twoskip</a> is preferred as it is less operational overhead (the files can live
alongside Cyrus itself without requiring a separate server and DBA expertise
to manage). In addition, Cyrus performs much of the backups/replication/transactional
robustness that a SQL server provides, so the tradeoff is less compelling.</p>
</div>
<div class="section" id="quotalegacy">
<h3>quotalegacy<a class="headerlink" href="#quotalegacy" title="Permalink to this headline">¶</a></h3>
<p>Only valid for the <a class="reference internal" href="#quotas-quotas-db">Quotas (quotas.db)</a>. Has the advantage of
virtually no lock contention.</p>
</div>
</div>
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