On Jan 13, 2009, at 5:00 AM, Jan-Frode Myklebust wrote:

We recently upgraded to dovecot v1.0.15 (from v1.0.0 + some local fixes), and after this upgrade we've started to get a couple of failures from deliver:

Jan 12 20:34:34 smtp1.ulh.mydomain.net deliver(someu...@somedomain.net): Raw backtrace: /usr/local/dovecot/ libexec/dovecot/deliver(i_syslog_panic_handler+0x1c) [0x45577c] -> / usr/local/dovecot/libexec/dovecot/deliver [0x45537c] -> /usr/local/ dovecot/libexec/dovecot/deliver(mail_index_sync_update_index+0x86f) [0x43eb8f] ->

Before this raw backtrace there should have been a "Panic: Something" logged also. That's more important than the raw backtrace.

Jan 13 10:37:59 atmail1.ulh.mydomain.net postfix/pipe[6320]: BB3337E4E7: to=<quarant...@mydomain.net>, relay=dovecot, delay=2.3, delays=0.06/0/0/2.2, dsn=5.3.0, status=bounced (Command died with signal 6: "/usr/local/dovecot/libexec/dovecot/deliver")

First, does anybody know if it's possible to change the behaviour here
to not bounce, but retry instead ?

You could at least write a wrapper script to deliver that detects if it crashes and then returns EX_TEMPFAIL.

And, is there anything we should do to debug further what the problem might be ?

Does it always crash for the same user?

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