[Dovecot] IMAP IDLE goes to sleep

[Timo Sirainen]

On Sun, 2007-06-24 at 23:16 -1000, Julian Cowley wrote:
> * 7941 EXISTS
> 
> [At some point after this, something happens (or doesn't happen) and
> dovecot no longer notifies of new messages.  The other client is still
> reading messages in the same mailbox and new mail is still arriving.]
> 
> * OK Still here
> * OK Still here
> * OK Still here
> * OK Still here
> * OK Still here
> 
> [The above message repeated another 30 times here.  Finally, IDLE
> mode is terminated:]
> 
> * OK Still here
> DONE
> * 7941 EXPUNGE
> A0017 OK Idle completed.

This is most likely because of outlook-idle workaround (enabled by
default). When you have been IDLEing for 29 minutes, Dovecot sends a
fake EXISTS reply and when DONE command is given, it sends EXPUNGE for
that fake EXISTS.

I don't understand why you have so many "OK Still here" notifications
there though. They're sent 2 minutes apart from each others, but between
EXISTS/EXPUNGE there should be max. 1 minute. Wonder if there's a bug in
timeout handling code..

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