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<li class="toctree-l4"><a class="reference internal" href="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="faqs/install-install-help.html">Help! There must be an easier way to get all this going...</a></li>
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<li class="toctree-l4"><a class="reference internal" href="faqs/r-murder-ha.html">Does the Cyrus Murder support High Availability configurations?</a></li>
<li class="toctree-l4"><a class="reference internal" href="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="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="faqs/r-subfolders.html">Can I have subfolders not appear under INBOX?</a></li>
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<li class="toctree-l4"><a class="reference internal" href="faqs/o-acls.html">How do I view ACLs on a mailbox?</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-annotations.html">What annotations are available?</a></li>
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<li class="toctree-l4"><a class="reference internal" href="faqs/o-deleted-expired-expunged-purged.html">When is What ... Deleted, Expired, Expunged or Purged?</a></li>
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<li class="toctree-l4"><a class="reference internal" href="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="faqs/o-gdb.html">How to run gdb on Cyrus components</a></li>
<li class="toctree-l4"><a class="reference internal" href="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="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="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="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="faqs/o-reconstruct.html">Why does reconstruct -m not work?</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-sharedfilesystem-gpfs.html">Shared File Systems GPFS for high availability</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-telemetry.html">How to enable telemetry</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-toomanyprocesses.html">The process count keeps growing!</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-unable-join-environment.html">"unable to join environment" error</a></li>
<li class="toctree-l4"><a class="reference internal" href="faqs/o-vacation-mailfrom.html">Why does Cyrus set the MAIL FROM address of the sender of vacation responses to '<>'?</a></li>
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<li class="toctree-l3"><a class="reference internal" href="#common-interoperability-problems">Common Interoperability Problems</a><ul>
<li class="toctree-l4"><a class="reference internal" href="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="faqs/interop-barenewlines.html">Why does Cyrus reject messages with "bare newlines"?</a></li>
<li class="toctree-l4"><a class="reference internal" href="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="faqs/interop-slow-delivery.html">Why does mail delivery go slow or hang sometimes?</a></li>
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<span id="imap-faq"></span><h1>Frequently Asked Questions<a class="headerlink" href="#frequently-asked-questions" title="Permalink to this heading"></a></h1>
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<h2>Features<a class="headerlink" href="#features" title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
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<li class="toctree-l1"><a class="reference internal" href="faqs/feature-database-backend.html">Which database backend should I use for which databases?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/feature-duplicate-delivery.html">Duplicate Delivery Suppression</a></li>
</ul>
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</section>
<section id="installation-problems">
<h2>Installation Problems<a class="headerlink" href="#installation-problems" title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="faqs/install-compilationerrors.html">Compilation errors about kssl.h and krb5.h on Red Hat Linux/Fedora</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/install-install-help.html">Help! There must be an easier way to get all this going...</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/install-linkerwarnings.html">OpenSSL Version Mismatches</a></li>
</ul>
</div>
</section>
<section id="common-feature-requests">
<h2>Common Feature Requests<a class="headerlink" href="#common-feature-requests" title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="faqs/r-murder-ha.html">Does the Cyrus Murder support High Availability configurations?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/r-pop3-logging.html">Can I configure pop3d to log amount and size of messages fetched by user?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/r-publicssharedfolders.html">How can I make CyrusSieve work with public shared folders?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/r-subfolders.html">Can I have subfolders not appear under INBOX?</a></li>
</ul>
</div>
</section>
<section id="common-operational-questions">
<h2>Common Operational Questions<a class="headerlink" href="#common-operational-questions" title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-acls.html">How do I view ACLs on a mailbox?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-annotations.html">What annotations are available?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-configdir-tempfs.html">Is it safe to put <configdirectory>/proc and <configdirectory>/lock on a tmpfs filesystem?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-coredump.html">How to enable core dumps</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-delete-mailbox.html">Why can I not delete a mailbox as an admin user?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-deleted-expired-expunged-purged.html">When is What ... Deleted, Expired, Expunged or Purged?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-deliverdb-size.html">Why is deliver.db so large?</a></li>
<li class="toctree-l1"><a class="reference internal" href="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-l1"><a class="reference internal" href="faqs/o-gdb.html">How to run gdb on Cyrus components</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-mailbox-doesnotexist.html">Cyrus delivers claims that the mailbox does not exist</a></li>
<li class="toctree-l1"><a class="reference internal" href="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-l1"><a class="reference internal" href="faqs/o-otherdatabases.html">Can I use MySQL (or another SQL database) as the primary mail store?</a></li>
<li class="toctree-l1"><a class="reference internal" href="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-l1"><a class="reference internal" href="faqs/o-reconstruct.html">Why does reconstruct -m not work?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-sharedfilesystem-gpfs.html">Shared File Systems GPFS for high availability</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-telemetry.html">How to enable telemetry</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-toomanyprocesses.html">The process count keeps growing!</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-unable-join-environment.html">"unable to join environment" error</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/o-vacation-mailfrom.html">Why does Cyrus set the MAIL FROM address of the sender of vacation responses to '<>'?</a></li>
</ul>
</div>
</section>
<section id="common-interoperability-problems">
<h2>Common Interoperability Problems<a class="headerlink" href="#common-interoperability-problems" title="Permalink to this heading"></a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="faqs/interop-8bit.html">Why does Cyrus reject 8-bit characters in the headers of my messages?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/interop-barenewlines.html">Why does Cyrus reject messages with "bare newlines"?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/interop-sieve-exim.html">How do I get Cyrus Sieve to play nice with Exim?</a></li>
<li class="toctree-l1"><a class="reference internal" href="faqs/interop-slow-delivery.html">Why does mail delivery go slow or hang sometimes?</a></li>
</ul>
</div>
<p>Looking for the <a class="reference external" href="https://www.cyrusimap.org/sasl/sasl/faq.html#sasl-faq" title="(in Cyrus SASL v2.1.28)"><span class="xref std std-ref">Cyrus SASL FAQ</span></a>?</p>
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