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advantage of this setup is that one Postfix machine can feed multiple
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mailbox servers over LMTP. The opposite is true as well: one
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mailbox server can be fed over LMTP by multiple Postfix machines.
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The <a href="LMTP_README.html">LMTP_README</a> document gives examples of how to use the <a href="lmtp.8.html">lmtp(8)</a>
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<li> <p> The <a href="local.8.html">local(8)</a> delivery agent understands UNIX-style mailboxes,
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qmail-compatible maildir files, Sendmail-style system-wide <a href="aliases.5.html">aliases(5)</a>
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<li> <p> The <a href="bounce.8.html">bounce(8)</a>, <a href="defer.8.html">defer(8)</a> and <a href="trace.8.html">trace(8)</a> servers each maintain
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their own queue directory trees with per-message logfiles. This
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information is used to send delivery or non-delivery notifications
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<li> <p> The <a href="bounce.8.html">bounce(8)</a>, <a href="defer.8.html">defer(8)</a> and <a href="trace.8.html">trace(8)</a> services each maintain
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their own queue directory trees with per-message logfiles. Postfix
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uses this information when sending "failed", "delayed" or "success"
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delivery status notifications to the sender. </p>
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<p> The <a href="trace.8.html">trace(8)</a> service implements support for the Postfix "sendmail
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<p> The <a href="trace.8.html">trace(8)</a> service also implements support for the Postfix
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-bv" and "sendmail -v" commands which produce reports about how
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Postfix delivers mail, and is available with Postfix version 2.1
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and later. See <a href="DEBUG_README.html#trace_mail"> DEBUG_README
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<p> When delivering mail to a destination with multiple mail servers,
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connection caching can help to skip over a non-responding server,
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and thus dramatically speed up delivery. </p>
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and thus dramatically speed up delivery. SMTP connection caching
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is available in Postfix version 2.2 and later. More information
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about this feature is in the <a href="CONNECTION_CACHE_README.html">CONNECTION_CACHE_README</a> document. </p>
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<tr> <td align="center" bgcolor="#f0f0ff"> <br> <a href="smtp.8.html">smtp(8)</a> <br>
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</td> <td> <tt> <-> </tt> </td> <td align="center"
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bgcolor="#f0f0ff"> <br> <a href="scache.8.html">scache(8)</a> <br> </td> <td> <tt>
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<-> </tt> </td> <td align="center" bgcolor="#f0f0ff"> <br>
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<a href="smtp.8.html">smtp(8)</a> <br> </td>
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<tr> <td> </td> <td> <tt> /-- </tt> </td> <td align="center"
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colspan="3" bgcolor="#f0f0ff"> <a href="smtp.8.html">smtp(8)</a> </td> <td colspan="2"> <tt>
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--> </tt> Internet </td> </tr>
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<tr> <td align="center" bgcolor="#f0f0ff"> <a href="qmgr.8.html">qmgr(8)</a> </td> <td> </td>
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<td align="center" rowspan="3"> </td> <td align="center"
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rowspan="3"><tt>|<br>|<br>|<br>|<br>v</tt></td> <td> </td>
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<tr> <td> </td> <td> <tt> \-- </tt> </td> <td align="center"
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colspan="2" bgcolor="#f0f0ff"> <a href="smtp.8.html">smtp(8)</a> </td> <td align="left"> <tt>
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--> </tt> Internet </td> </tr>
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<tr> <td colspan="3"> </td> <td align="center"><tt>^<br>|</tt></td>
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<td> </td> </tr>
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<tr> <td colspan="3"> </td> <td align="center" colspan="3"
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bgcolor="#f0f0ff"> <a href="scache.8.html">scache(8)</a> </td> </tr>
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