Hi there,
I am having a weird problem with dovecot and ssl.
If I am accessing the dovecot imap server with for example sylpheed-claws or
evolution, everything works fine. If it is accessed via windows either by
outlook or thunderbird, we get occassional timeouts.
It's working fine for a few hours, then for 5 to 20 minutes, every attempt
to connect from the outside results in "Connection to server timed
out". Added to that, the problem only arises, if a direct SSL connection to
Port 993 is used. Using Sylpheed with STARTTLS to Port 143 from the outside
works fine as well.
It's not a firewall Problem, since port 993 and 143 are open, the config
files have been checked over and over for 2 weeks and are good as well.
Dovecot log says:
imap-login: Apr 20 13:26:05 Warning: SSL_read() syscall failed: Connection timed
out [83.104.224.142]
Doing uber verbose output doesn't bring up any extended information, syslog
stays clean as well.
The Problem is not directly reproducable by a certain action, it just arises
from time to time. There can be 3 working days without problems, or 6 timeouts
> 20 minutes within one day.
System is Debian Sarge unstable with a custom 2.6.10 Kernel.
During the timeouts, mail is still received and put into the users mailboxes by
exim, it's just that you cannot access the imap server for approx 20
minutes.
Dovecot version is 0.99.14
Regards
Alexander Heuer
