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<section id="why-does-reconstruct-m-not-work">
<h1>Why does reconstruct -m not work?<a class="headerlink" href="#why-does-reconstruct-m-not-work" title="Permalink to this heading"></a></h1>
<p>From the <a class="reference internal" href="../manpages/systemcommands/reconstruct.html#std-cyrusman-reconstruct-8">reconstruct(8)</a> man page:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>−m NOTE: CURRENTLY UNAVAILABLE
Rebuild the mailboxes file. Use whatever data in the existing
mailboxes file it can scavenge, then scans all partitions listed
in the imapd.conf(5) file for additional mailboxes.
</pre></div>
</div>
<p>Reconstruct is currently unable to rebuild the mailboxes db, and
comments on the mailing list indicate this ability will not be added; at
least, not any time soon.</p>
<p>The solution here is to make sure that you back up your mailboxes db,
preferably including a plain-text copy of it. Please see Backups for
more information.</p>
<p>If you do find yourself with a corrupted mailboxes.db, there are a few
things you can try. The first is to see if <code class="docutils literal notranslate"><span class="pre">db_recover</span></code> can recover
your database. If that doesnt' work, there should be backups in
<code class="docutils literal notranslate"><span class="pre">$CONFIGDIRECTORY/db.backup1</span></code> and <code class="docutils literal notranslate"><span class="pre">$CONFIGDIRECTORY/db.backup2</span></code> that
may be OK.</p>
<p>If you're using Simon Matter's RPMs, plain-text copies of the mailboxes
database should be being generated and saved in
<code class="docutils literal notranslate"><span class="pre">/var/lib/imap/backup</span></code>. Try rebuilding the db from one of those using
<a class="reference internal" href="../manpages/systemcommands/ctl_mboxlist.html#std-cyrusman-ctl_mboxlist-8">ctl_mboxlist(8)</a>. Alternately, try asking the mailing list
for help.</p>
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