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<section id="access-control-defaults">
<span id="imap-admin-access-control-defaults"></span><h1>Access Control Defaults<a class="headerlink" href="#access-control-defaults" title="Permalink to this heading"></a></h1>
<section id="administrators">
<h2>Administrators<a class="headerlink" href="#administrators" title="Permalink to this heading"></a></h2>
<p>Regardless of the ACL on a mailbox, users who are listed in the
<code class="docutils literal notranslate"><span class="pre">admins</span></code> configuration option in <a class="reference internal" href="../../manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a> implicitly
have the <code class="docutils literal notranslate"><span class="pre">l</span></code> and <code class="docutils literal notranslate"><span class="pre">a</span></code> rights on all mailboxes.</p>
<p>Administrators can also see across domains which normal users cannot.</p>
<div class="admonition warning">
<p class="admonition-title">Warning</p>
<p>An admin user should not be a normal email account.</p>
</div>
</section>
<section id="mailbox-owners">
<h2>Mailbox owners<a class="headerlink" href="#mailbox-owners" title="Permalink to this heading"></a></h2>
<p>The user who owns a mailbox folder has additional rights which are set
regardless of any additional ACLs. These are:</p>
<ul class="simple">
<li><p><strong>l</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-l"><span class="std std-ref">lookup</span></a></p></li>
<li><p><strong>k</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-k"><span class="std std-ref">create subfolders</span></a></p></li>
<li><p><strong>x</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-x"><span class="std std-ref">delete this folder</span></a></p></li>
<li><p><strong>a</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-a"><span class="std std-ref">administer</span></a></p></li>
</ul>
<p>These are set in <code class="docutils literal notranslate"><span class="pre">implicit_owner_rights</span></code> of <a class="reference internal" href="../../manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a>.</p>
</section>
<section id="default">
<h2>Default<a class="headerlink" href="#default" title="Permalink to this heading"></a></h2>
<p>For all other mailboxes not owned by a user, any user accessing these
mailboxes have the following default privileges:</p>
<ul class="simple">
<li><p><strong>l</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-l"><span class="std std-ref">lookup</span></a></p></li>
<li><p><strong>r</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-r"><span class="std std-ref">read contents</span></a></p></li>
<li><p><strong>s</strong> - <a class="reference internal" href="rights-reference.html#imap-admin-access-control-right-s"><span class="std std-ref">seen</span></a></p></li>
</ul>
<p>These are set in <code class="docutils literal notranslate"><span class="pre">defaultacl</span></code> of <a class="reference internal" href="../../manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a>.</p>
</section>
<section id="initial-acls-for-newly-created-mailboxes">
<h2>Initial ACLs for Newly Created Mailboxes<a class="headerlink" href="#initial-acls-for-newly-created-mailboxes" title="Permalink to this heading"></a></h2>
<p>When a mailbox is created, its ACL starts off with a copy of the ACL of its closest parent mailbox. When a user is created, the ACL on the user's <code class="docutils literal notranslate"><span class="pre">INBOX</span></code> starts off with a single entry granting all rights to the user. When a non-user mailbox is created and does not have a parent, its ACL is initialized to the value of the <code class="docutils literal notranslate"><span class="pre">defaultacl</span></code> option in <a class="reference internal" href="../../manpages/configs/imapd.conf.html#std-cyrusman-imapd.conf-5">imapd.conf(5)</a>.</p>
</section>
<section id="other-implicit-rights">
<h2>Other Implicit Rights<a class="headerlink" href="#other-implicit-rights" title="Permalink to this heading"></a></h2>
<p>Note that some rights are available implicitly, for example 'anonymous'
always has 'p' on user INBOXes, and users always have <code class="docutils literal notranslate"><span class="pre">la</span></code> rights on
mailboxes within their INBOX hierarchy.</p>
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