[Dovecot] lot's of timeouts

[Timo Sirainen]

On Dec 18, 2009, at 10:56 AM, Götz Reinicke - IT-Koordinator wrote:

> But the mailclients (mostly thunderbird and apple mail) still reporte
> the timeouts by accessing the mailboxes.
> 
> The server is doing smtp, imap/pop3, webmailsystem and
> spam/antivirus-checking all together. (RH EL 5, sendmail, horde, mysql,
> mailscanner, spamassassin)
> 
> We use the original RH dovecot-1.0.7, mbox-format and mailboxes up to 4
> GB ... (historicaly grown ...)

Have you set mbox_very_dirty_syncs=yes?

> So where to start debugging the imap/pop3 timeouts? What information may
> I provide, which doc may I read?

Anything in logs? Anyway my guess is that it spends all the time reading those 4 GB mailboxes..