New: en_US/troubleshooting/debug.postfix.md
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# Turn on debug mode in Postfix
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There're few ways to turn on debug mode in Postfix, you can choose the one you
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prefer.
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## Verbose logging for specific SMTP connections
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To debug smtp connection from particular client or sender server, list client
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hostname or IP address in the `debug_peer_list` parameter (in
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`/etc/postfix/main.cf`). For example:
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```
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debug_peer_list = 192.168.0.1
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```
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You can specify one or more hosts, domains, addresses or net/masks. Execute
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command `postfix reload` to make the change effective immediately.
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## Making Postfix daemon programs more verbose
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There're many daemon services defined in `/etc/postfix/master.cf`, for example:
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```
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smtp inet n - n - - smtpd
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```
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To make Postfix logging verbose info of this daemon, please append one or more
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`-v` options to selected daemon and execute command `postfix reload`.
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```
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smtp inet n - n - - smtpd -v
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```
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* To diagnose problems with address rewriting specify a `-v` option for the
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`cleanup(8)` and/or `trivial-rewrite(8)` daemon.
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* To diagnose problems with mail delivery specify a `-v` option for the
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`qmgr(8)` or `oqmgr(8)` queue manager, or for the `lmtp(8)`, `local(8)`,
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`pipe(8)`, `smtp(8)`, or `virtual(8)` delivery agent.
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## See also
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* [Postfix Debugging Howto](http://www.postfix.org/DEBUG_README.html)
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Turn on debug mode in Postfix</title>
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<link rel="stylesheet" type="text/css" href="./css/markdown.css" />
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</head>
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<body>
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<div id="navigation">
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<a href="/index.html" target="_blank">
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<img alt="iRedMail web site"
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src="./images/logo-iredmail.png"
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style="vertical-align: middle; height: 30px;"
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/>
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<span>iRedMail</span>
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</a>
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// <a href="./index.html">Document Index</a></div><h1 id="turn-on-debug-mode-in-postfix">Turn on debug mode in Postfix</h1>
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<p>There're few ways to turn on debug mode in Postfix, you can choose the one you
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prefer.</p>
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<h2 id="verbose-logging-for-specific-smtp-connections">Verbose logging for specific SMTP connections</h2>
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<p>To debug smtp connection from particular client or sender server, list client
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hostname or IP address in the <code>debug_peer_list</code> parameter (in
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<code>/etc/postfix/main.cf</code>). For example:</p>
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<pre><code>debug_peer_list = 192.168.0.1
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</code></pre>
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<p>You can specify one or more hosts, domains, addresses or net/masks. Execute
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command <code>postfix reload</code> to make the change effective immediately.</p>
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<h2 id="making-postfix-daemon-programs-more-verbose">Making Postfix daemon programs more verbose</h2>
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<p>There're many daemon services defined in <code>/etc/postfix/master.cf</code>, for example:</p>
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<pre><code>smtp inet n - n - - smtpd
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</code></pre>
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<p>To make Postfix logging verbose info of this daemon, please append one or more
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<code>-v</code> options to selected daemon and execute command <code>postfix reload</code>.</p>
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<pre><code>smtp inet n - n - - smtpd -v
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</code></pre>
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<ul>
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<li>To diagnose problems with address rewriting specify a <code>-v</code> option for the
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<code>cleanup(8)</code> and/or <code>trivial-rewrite(8)</code> daemon.</li>
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<li>To diagnose problems with mail delivery specify a <code>-v</code> option for the
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<code>qmgr(8)</code> or <code>oqmgr(8)</code> queue manager, or for the <code>lmtp(8)</code>, <code>local(8)</code>,
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<code>pipe(8)</code>, <code>smtp(8)</code>, or <code>virtual(8)</code> delivery agent.</li>
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</ul>
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<h2 id="see-also">See also</h2>
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<ul>
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<li><a href="http://www.postfix.org/DEBUG_README.html">Postfix Debugging Howto</a></li>
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</ul><div class="footer">
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<p style="text-align: center; color: grey;">All documents are available in <a href="https://bitbucket.org/zhb/iredmail-docs/src">BitBucket repository</a>, and published under <a href="http://creativecommons.org/licenses/by-nd/3.0/us/" target="_blank">Creative Commons</a> license. You can <a href="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 <a href="http://www.iredmail.org/contact.html">contact us</a> to fix it.</p>
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</div>
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</body></html>
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@ -192,6 +192,7 @@
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<li><a href="debug.iredapd.html">Turn on debug mode in iRedAPD</a></li>
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<li><a href="debug.mysql.html">Log executed SQL commands in MySQL/MariaDB</a></li>
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<li><a href="debug.openldap.html">Turn on debug mode in OpenLDAP</a></li>
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<li><a href="debug.postfix.html">Turn on debug mode in Postfix</a></li>
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<li><a href="debug.roundcubemail.html">Turn on debug mode in Roundcube webmail</a></li>
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<li><a href="debug.sogo.html">Turn on debug mode in SOGo</a></li>
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</ul>
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