Hi,We are running Postfix 2.8.1 with Dovecot 1.2.12 on CentOS 5.6 (64 bit) on a VM. The system is in production.
From time to time (about 2-3 times a week), I get an error "fatal: lock file defer <message ID>: defer service failure". After that, it seems to continue normally, without any intervention.
It's not a high traffic system (less than 1000 messages per hour in/out) [this is also due to it being behind a mail gateway device filtering spam].
Here is an example from the log:May 22 08:10:24 vmail postfix/qmgr[2490]: 2A0F96E64C1: from=<>, size=3028, nrcpt=1 (queue active) May 22 08:10:26 vmail postfix/qmgr[2490]: 18A13C4D1D6: from=<geor...@space.noa.gr>, size=68730, nrcpt=194 (queue active) May 22 08:10:47 vmail postfix/smtp[4952]: connect to libra.astro.bas.bg[195.96.237.193]:25: Connection timed out May 22 08:10:49 vmail postfix/smtp[4953]: connect to bagn.obs-mip.fr[193.52.224.7]:25: Connection timed out May 22 08:11:08 vmail postfix/bounce[5079]: fatal: lock file defer 18A13C4D1D6: Resource temporarily unavailable May 22 08:11:09 vmail postfix/smtp[4953]: warning: 18A13C4D1D6: defer service failure May 22 08:11:09 vmail postfix/smtp[4953]: 18A13C4D1D6: to=<nadege.meun...@bagn.obs-mip.fr>, relay=none, delay=155951, delays=155927/0.63/23/0, dsn=4.4.1, status=deferred (connect to bagn.obs-mip.fr[193.52.224.7]:25: Connection timed out) May 22 08:11:09 vmail postfix/master[2482]: warning: process /usr/libexec/postfix/bounce pid 5079 exit status 1 May 22 08:11:29 vmail postfix/bounce[5181]: fatal: lock file defer 18A13C4D1D6: Resource temporarily unavailable May 22 08:11:47 vmail postfix/smtp[4952]: 18A13C4D1D6: to=<duch...@libra.astro.bas.bg>, relay=none, delay=155949, delays=155927/0.63/21/0, dsn=4.4.1, status=deferred (connect to libra.astro.bas.bg[195.96.237.193]:25: Connection timed out) May 22 08:11:48 vmail postfix/smtp[4953]: warning: 18A13C4D1D6: defer service failure May 22 08:11:47 vmail postfix/master[2482]: warning: /usr/libexec/postfix/bounce: bad command startup -- throttling
Can someone please provide some insight to the problem and suggest a solution?
Thanks in advance, Nick
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