[Dovecot] Connection dropped by IMAP server

[Frank Bonnet]

Le 21/07/2011 02:21, Duane Hill a écrit :
> Wednesday, July 20, 2011, 4:56:20 PM, you wrote:
>
>> On 7/20/2011 2:52 PM, Marc Perkel wrote:
>>> Some time people running Squirrelmail get connection dropped by imap
>>> server. Anyone know what causes this?
>>>
>>> Thanks in advance.
>
>> More details. It only happens occasionally and restarting Dovecot fixes
>> it. It's as if I'm running out of something.
>
> Without knowing more system and configuration details, it would be
> tricky to guess.
>

I had the same problem it seems squirrelmail open too much
sessions ( one at each user's request ), I solved it bye installing 
imapproxy between the webmail and the imap server to cache sessions.

hope this help