On 16.09.2010 04:31, Jacob Whatley wrote:

> I have confirmed what appears to be a race condition with multiple IMAP
> connections to UW-IMAP that occurs when a user is logged in to rcmail and
> begins to download a large attachment. If the attachment doesn't complete
> its download sequence before the next scheduled check (1, 3, or 5 min) for
> new mail, the subsequent login to the IMAP Server causes UW-IMAP to kill the
> process that is downloading the attachment in favor of the new login
> connection. Here is a maillog example:

If this is really the issue you could try with imapproxy. There're other
places where concurent connections may happen. In neither way connection
dropping shouldn't hang apache process. If so, I don't think we'll find
a solution.

> I understand that UW-IMAP is old and that we should consider replacing with
> Dovecot or Courier, but I would like to explore the issue before initiating
> such a recommendation.

> More specifically and in the interim, I need to know where in the code to
> change the option 1, 3, 5 minute(s) so that I can increase the maximum
> available time between checking for new mail. 

The time for checking you can set in Preferences/Mailbox View, you can
set it up to 30 minutes. For testing use imap_debug option, log from
imap conversation maybe helpful.

-- 
Aleksander 'A.L.E.C' Machniak http://alec.pl gg:2275252
LAN Management System Developer http://lms.org.pl
Roundcube Webmail Developer http://roundcube.net
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