[Dovecot] Timeout during APPEND

[Timo Sirainen]

On Mon, 2011-06-13 at 10:11 +0200, martin f krafft wrote:
> also sprach martin f krafft <madduck at madduck.net> [2011.06.13.1002 +0200]:
> > One user reports continuous problems synchronising her mailbox via
> > IMAP (offlineimap, via SSH tunnel or SSL socket). It seems that she
> > has a large, locally-created message, but the uplink bandwidth seems
> > to be not enough to push it before dovecot times out the APPEND
> > command.
> 
> Upon further inspection, we found that the message *does* get saved
> remotely. Hence, this seems like an offlineimap problem, timing out
> because it receives no responses to APPEND (because the transfer
> takes so long). The transfer actually completes, but offlineimap
> will have given up by then already.
> 
> Has anyone else seen this?
> 
> Can you confirm this behaviour?
> 
> What should offlineimap be doing differently?

Timing out after only 30 seconds seems a bit aggressive to me,
especially if you're uploading a large message over a slow network
connection. Isn't it configurable?