On 12.08.2010, at 14:59, Timo Sirainen wrote: > > Have you looked at if during the 20-40 seconds the disk I/O is high? If > the problem is on server and not on network, it might be helpful to > strace the process that's taking a long time to reply. Then it could > show if it's mainly waiting for some system call to finish. > http://wiki.dovecot.org/Debugging/ProcessTracing
Thank you, I'll check that. Iv