From dovecot  Sat Oct 06 12:27:05 2007
From: Bernd Kuhls <bernd.kuhls () informatik ! uni-oldenburg ! de>
Date: Sat, 06 Oct 2007 12:27:05 +0000
To: dovecot
Subject: Re: [Dovecot] Dovecot raw backtrace when copying to folder
Message-Id: <fe7uup$grb$1 () sea ! gmane ! org>
X-MARC-Message: https://marc.info/?l=dovecot&m=119167435222060

Timo Sirainen wrote:
> On Sun, 2007-09-30 at 16:01 +0200, Bernd Kuhls wrote:
>> unless you can provide another way to restrict access to IMAP and POP3 
>> to our local IP range this is not an option for us.
> 
> iptables?
> 
>> Until now no new crash in the logs. I will try to reproduce the bug.
> 
> I suppose this fixes it:
> http://hg.dovecot.org/dovecot-1.0/rev/8d6433652a33

Hi,

first the good news, since using Dovecot including the patch mentioned 
above there were no new crashes this week, well done!

> /var/log/dovecot# grep Panic *
> dovecot.main:dovecot: 2007-09-25 16:54:08 Panic: Lost login process PID 420
> dovecot.main:dovecot: 2007-09-27 12:13:02 Panic: Lost login process PID 5160
> dovecot.main:dovecot: 2007-09-30 15:26:34 Panic: Lost login process PID 9091

But now my syslog is filled with this once every 10 minutes:

> Oct  6 14:11:42 server inetd[16124]: pop3s/tcp: bind: Address already in use
> Oct  6 14:11:42 server inetd[16124]: pop3/tcp: bind: Address already in use
> Oct  6 14:11:42 server inetd[16124]: imaps/tcp: bind: Address already in use
> Oct  6 14:11:42 server inetd[16124]: imap/tcp: bind: Address already in use

But Dovecots behaviour has changed somehow. When updating dovecot.conf 
all I had to do to activate the new config was to kill the master 
process. Client-side connections let inetd restart dovecot, this is not 
the case anymore. Now I have to start /usr/sbin/dovecot on the shell to 
reactivate the IMAP/POP service. Debians /etc/init.d/dovecot has to be 
changed to reflect your patch, right? Currently it contains

> # The init script should do nothing if dovecot or another imap/pop3 server
> # is being run from inetd, and dovecot is configured to run as an imap or
> # pop3 service
> for p in `sed -r "s/^ *(([^:]+|\[[^]]+]|\*):)?(pop3s?|imaps?)[ \t].*/\3/;t;d" \
>   /etc/inetd.conf`
> do
>   for q in `sed -r "s/^[ \t]*protocols[ \t]*=[ \t]*(([^\"]*)|\"(.*)\")/\2\3/;t;d" \
>     ${CONF}`
>   do
>     if [ $p = $q ]; then
>       exit 0
>     fi
>   done
> done

Greetings, spiralvoice