[Dovecot] very frequent disconnections

[Dan Christensen]

Dan Christensen <jdc at uwo.ca> writes:

> I've installed dovecot 1:1.1.11-0ubuntu4.1 on my jaunty system.
> Access from the same host works well, but when I access remotely
> (from various MUAs and networks) I get *very* frequent disconnects.
> Authentication is fine, and I can usually open a mail folder,
> but larger operations such as copying 20 messages into an imap
> folder always get disconnected.
...
> The clients I have tried are Gnus (with starttls and gnutls-cli) and
> evolution, on a jaunty system;  and k9mail-beta on an HTC Dream cell
> phone.  All four configurations show similar connection issues, and
> the jaunty client system has a solid DSL connection to the server.

If I configure dovecot to listen on a different port, I don't have these
troubles.  So I suspect some network throttling of imap data somewhere.
My contact at the university doesn't think this happens, and I'd be
surprised if my ISP does this, but I can't think of any other
explanation.

Dan