Timo Sirainen wrote:
On Sat, 2012-04-28 at 13:00 +0200, Daniel Parthey wrote:
we are experiencing similar sporadic data timeout issues with dovecot 2.0.20 as in http://dovecot.org/pipermail/dovecot/2011-June/059807.html at least once a week. Some mails get temporarily deferred in the postfix queue since dovecot director lmtp refuses them and the mails are delivered at a later time.
[...] what isn't in v2.0 is the larger rewrite of the LMTP proxying code in v2.1, which I hope fixes also this timeout problem.
This Friday I did about 50 "sendmail -bv" commands in a loop to check some postfix aliases, which resulted in a lot of mails to the postmaster alias (which is distributed to about 10 people).
The result was about 11 bounces of the following type:
##################################################################### Return-Path: <> Received: from mail01.example.org ([10.129.3.233]) by mail04.example.org (Dovecot) with LMTP id gl2gG3WyyE+faQAAUavrWA ; Fri, 01 Jun 2012 14:15:49 +0200 Return-Path: <> Received: from mx01.example.org ([127.0.0.1]) by mail01.example.org (Dovecot) with LMTP id zAL8MXCyyE8nLwAA3l+BKA ; Fri, 01 Jun 2012 14:15:49 +0200 RSET RSET #####################################################################
At the same time, the dovecot lmtp timeout errors occurred and not all "sendmail -bv" mails got delivered.
Seems like a serious error and I will need to consider upgrading to 2.1 if the bug cannot get fixed in 2.0.
Regards Daniel