[Dovecot] IMAP timeout problem

[Timo Sirainen]

On Thu, 2009-09-03 at 13:23 -0700, Vasantha Narayan wrote:
> We cannot get a telnet connection to the IMAP port or a openssl
> connection to the IMAPS port.  Kill -HUP of the dovecot server solves
> the problem.  But again, when the usage increases, the problem
> surfaces again.  There is no problem with POP or POPS.  It continues
> to function normally while IMAP times out and freezes two or three
> times a day.

How many imap-login processes do you have at those times? See if
changing login_* settings helps. http://wiki.dovecot.org/LoginProcess

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