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  • Committer: Bazaar Package Importer
  • Author(s): LaMont Jones
  • Date: 2011-02-22 11:20:43 UTC
  • mfrom: (1.1.27 upstream)
  • Revision ID: james.westby@ubuntu.com-20110222112043-c34ht219w3ybrilr
Tags: 2.8.0-2
* a little more lintian cleanup
* Fix missing format strings in smtp-sink.c

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Users list.  Congestion was reported with the active and incoming
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queues large and not shrinking despite very large delivery agent
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process limits.  The thread is archived at:
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<a href="http://groups.google.com/groups?th=636626c645f5bbde">http://groups.google.com/groups?th=636626c645f5bbde</a> </p>
 
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<a href="http://groups.google.com/groups?threadm=c0b7js$2r65$1@FreeBSD.csie.NCTU.edu.tw">http://groups.google.com/groups?threadm=c0b7js$2r65$1@FreeBSD.csie.NCTU.edu.tw</a>
 
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and
 
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<a href="http://archives.neohapsis.com/archives/postfix/2004-02/thread.html#1371">http://archives.neohapsis.com/archives/postfix/2004-02/thread.html#1371</a>
 
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</p>
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<p> Using an older version of <a href="qshape.1.html">qshape(1)</a> it was quickly determined
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that all the messages were for just a few destinations: </p>
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/etc/postfix/<a href="postconf.5.html">main.cf</a>:
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    <a href="postconf.5.html#transport_maps">transport_maps</a> = hash:/etc/postfix/transport
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    slow_destination_rate_delay = 1
 
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    slow_destination_concurrency_failed_cohort_limit = 100
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/etc/postfix/transport:
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    example.com  slow:
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$slow_destination_rate_delay seconds between deliveries to the same
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destination.  </p>
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<p> IMPORTANT!! The large slow_destination_concurrency_failed_cohort_limit
 
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value is needed. This prevents Postfix from deferring all mail for
 
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the same destination after only one connection or handshake error
 
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(the reason for this is that non-zero slow_destination_rate_delay
 
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forces a per-destination concurrency of 1).  </p>
 
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<li> <p> Earlier Postfix versions: </p>
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<ul>