[courier-users] Re: Thunderbird - courier-IMAP interaction problems

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Peter Ford writes:

> The problem is that half the company is on another site and connects
> through their ADSL router which masquerades the IP address.
> MAXDAEMONS=4000 is a bit over the top, I admit, but MAXPERIP needs to be
> big enough to potentially let the whole company come in on one IP - we
> might have a company meeting there...
>
> Troels' post, and the link within to Mozilla's bugzilla, suggests there
> is a known problem with IMAP servers timing the connection out in under
> 29 minutes, which T-bird doesn't like. If there's an easy config to

The problem is that "ADSL router". It's broken.

> change the timeout in Courier-IMAP then I might use that, otherwise I'll
> recommend waiting for a new release.

Courier does not timeout sessions in less then 30 minutes. Courier users
the standard 30 minute timeout.

Your problem is a common one involving broken "routers" that break
connections if they don't see any activity on the connection for a couple of
minutes. It is normal for IMAP sessions to go 15-20 minutes without any
activity. A broken router then convinces itself that the connection no
longer exists, and breaks it.



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