https://htyp.org/mw/index.php?action=history&feed=atom&title=Postfix%2Fflow
Postfix/flow - Revision history
2026-08-13T10:44:33Z
Revision history for this page on the wiki
MediaWiki 1.45.3
https://htyp.org/mw/index.php?title=Postfix/flow&diff=15452&oldid=prev
Woozle: /* About */ there is now a subpage for local(8)
2011-06-12T17:55:08Z
<p><span class="autocomment">About: </span> there is now a subpage for local(8)</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:55, 12 June 2011</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/pickup.8.html pickup(8)]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/pickup.8.html pickup(8)]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></td></div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></td></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><td valign="middle" align="center" bgcolor="#f0f0ff"> [<del style="font-weight: bold; text-decoration: none;">http://postfix.org</del>/local<del style="font-weight: bold; text-decoration: none;">.8.html </del>local<del style="font-weight: bold; text-decoration: none;">(8)</del>]</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><td valign="middle" align="center" bgcolor="#f0f0ff"> [<ins style="font-weight: bold; text-decoration: none;">[Postfix</ins>/local<ins style="font-weight: bold; text-decoration: none;">|</ins>local<ins style="font-weight: bold; text-decoration: none;">]</ins>]</div></td></tr>
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Woozle
https://htyp.org/mw/index.php?title=Postfix/flow&diff=15073&oldid=prev
Woozle: extracted from main Postfix page
2011-03-30T23:07:13Z
<p>extracted from main Postfix page</p>
<p><b>New page</b></p><div>==About==<br />
There are multiple stages inside [[Postfix]], and each stage can be affected by configuration parameters. I have not yet found a clear documentation of the data flow, but it seems to go like this (only much more complicated) under normal circumstances:<br />
<br />
: [[SMTP]] &rarr; Postfix delivery queue &rarr; user alias mappings &rarr; [[mail delivery agent|local delivery]] (MDA, e.g. [[Dovecot]])<br />
<br />
However, when using virtual (non-system) users, internally-generated emails (e.g. mail from [[cron]] or [[PHP]]'s mail() function) seem to bypass the alias mappings, which the MDA then rejects if they are addressed to an alias instead of a user.<br />
<br />
A table from the official documentation is more detailed (the "-&lt;" between the last two boxes in the original document is apparently intended to indicate rightward movement with a fan-out, i.e. the message may go through any of the 3 sub-boxes on the right; it has been replaced with "-&gt;" here).<br />
<table align=center><br />
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<td colspan="2"> </td><br />
<td align="center" bgcolor="#f0f0ff"> [http://postfix.org/trivial-rewrite.8.html trivial-<br>rewrite(8)]<br>(std<br />
form) </td><br />
<td colspan="5"> </td><br />
<td align="center" bgcolor="#f0f0ff"> [http://postfix.org/trivial-rewrite.8.html trivial-<br>rewrite(8)]<br>(resolve)<br />
</td><br />
</tr><br />
<tr><br />
<td colspan="2"> </td><br />
<td align="center"><table><tr><td align="center"> ^<br> <tt> |<br />
</tt> </td><td align="center"> <tt> |<br>v </tt> </td></tr></table><br />
</td><td colspan="5"> </td><br />
<td align="center"><table><tr><td align="center"> ^<br> <tt> |<br />
</tt> </td><td align="center"> <tt> |<br>v </tt> </td></tr></table><br />
</td><td colspan="2"> </td><br />
</tr><br />
<tr><br />
<td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/smtpd.8.html smtpd(8)]<br />
</td><br />
<td rowspan="3" valign="middle" align="center"> <tt> &gt;- </tt><br />
</td><br />
<td rowspan="3" align="center" bgcolor="#f0f0ff"> [http://postfix.org/cleanup.8.html cleanup(8)] </td><br />
<td rowspan="3" valign="middle" align="center"> <tt> -&gt; </tt><br />
</td><br />
<td rowspan="3" align="center" bgcolor="#f0f0ff"> [http://postfix.org/QSHAPE_README.html#incoming_queue incoming] </td><br />
<td rowspan="3" valign="middle" align="center"> <tt> -&gt; </tt><br />
</td><br />
<td rowspan="3" align="center" bgcolor="#f0f0ff"> [http://postfix.org/QSHAPE_README.html#active_queue active] </td><br />
<td rowspan="3" valign="middle" align="center"> <tt> -&gt; </tt><br />
</td><br />
<td rowspan="3" align="center" bgcolor="#f0f0ff"> [http://postfix.org/qmgr.8.html qmgr(8)]</td><br />
<td rowspan="3" valign="middle" align="center"> <tt> -&gt; </tt><br />
</td><br />
<td valign="middle" align="center" bgcolor="#f0f0ff"><br />
[http://postfix.org/smtp.8.html smtp(8)]</td><br />
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<tr> <br />
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[http://postfix.org/qmqpd.8.html qmqpd(8)]</td><br />
<td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/lmtp.8.html lmtp(8)]</td><br />
</tr><br />
<tr><br />
<td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/pickup.8.html pickup(8)]<br />
</td><br />
<td valign="middle" align="center" bgcolor="#f0f0ff"> [http://postfix.org/local.8.html local(8)]<br />
</td><br />
</tr><br />
<tr><br />
<td colspan="2"> </td><br />
<td align="center"> ^<br> <tt> | </tt> </td><br />
<td colspan="3"> </td><br />
<td align="center"><table><tr><td align="center"> ^<br> <tt> |<br />
</tt> </td><td align="center"> <tt> |<br>v </tt> </td></tr></table><br />
</td><td colspan="4"> </td><br />
</tr><br />
<tr><br />
<td colspan="2"> </td><br />
<td align="center"> bounces<br> forwarding<br> notices</td><br />
<td colspan="3"> </td><br />
<td align="center" bgcolor="#f0f0ff"> [http://postfix.org/QSHAPE_README.html#deferred_queue deferred]<br />
</td><td colspan="2"> </td><br />
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There are two more diagrams [http://www.postfix.org/OVERVIEW.html here]; the first shows the input stage in a bit more detail, and the second shows the delivery stage. There are two more diagrams [http://www.postfix.org/FILTER_README.html here], showing where filtering takes place.</div>
Woozle