<pclass="admonition-title">This tutorial is available in other languages. <ahref="https://bitbucket.org/zhb/iredmail-docs/src">Help translate more</a></p>
<li><ahref="#setup-a-dns-server-in-lan-or-localhost-to-cache-dns-queries">Setup a DNS server in LAN or localhost to cache DNS queries</a></li>
<li><ahref="#enable-postscreen-service-to-help-reduce-spam">Enable postscreen service to help reduce spam</a></li>
<li><ahref="#update-amavisd-postfix-config-files-to-process-more-emails-concurrently">Update Amavisd + Postfix config files to process more emails concurrently</a></li>
</ul>
</li>
</ul>
</div>
<p>If you're running a busy mail server (many inbound/outbound emails every day),
you can follow below suggestions for better performance.</p>
<h3id="setup-a-dns-server-in-lan-or-localhost-to-cache-dns-queries">Setup a DNS server in LAN or localhost to cache DNS queries</h3>
<h3id="update-amavisd-postfix-config-files-to-process-more-emails-concurrently">Update Amavisd + Postfix config files to process more emails concurrently</h3>
<ul>
<li><ahref="./concurrent.processing.html">Process more emails concurrently</a></li>
<pstyle="text-align: center; color: grey;">All documents are available in <ahref="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <ahref="http://creativecommons.org/licenses/by-nd/3.0/us/"target="_blank">Creative Commons</a> license. You can <ahref="https://bitbucket.org/zhb/iredmail-docs/get/tip.tar.bz2">download the latest version</a> for offline reading. If you found something wrong, please do <ahref="http://www.iredmail.org/contact.html">contact us</a> to fix it.</p>