dovecot - Nov 2007 - Mail.app IDLE support

Hi,

I'm trying to use the new IDLE support in Mail.app on Mac OS 10.5, and  
it works sort of, but it seems to miss some notifications.
My guess is the IDLE support in Mail.app is implemented such that it  
sets up a connection for IDLE notifications and then checks the mail  
via another connection, and because of that the "IDLE-connection" gets
disconnected for inactivity after 30 min. The reason for my guess is  
that I get the following in my logs:

dovecot: Nov 14 17:00:29 Info: imap-login: Login: user=<amanda>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:00:29 Info: imap-login: Login: user=<ehmsen>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:00:30 Info: imap-login: Login: user=<amanda>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:00:50 Info: imap-login: Login: user=<ehmsen>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:00:51 Info: imap-login: Login: user=<ehmsen>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:04:58 Info: imap-login: Login: user=<ehmsen>,  
method=PLAIN, rip=::ffff:xxx.xxx.xxx.xxx, lip=::ffff:192.168.1.2, TLS
dovecot: Nov 14 17:30:40 Info: IMAP(amanda): Disconnected for inactivity
dovecot: Nov 14 17:43:29 Info: IMAP(amanda): Disconnected for inactivity

Is there something I can do about this problem? Is the IDLE  
implementation in the 1.1 branch different from the implementation in  
the 1.0 branch of dovecot?
Or can I debug this issue further?

I guess these things are standardized, but it seems hard for Apple to  
follow a standard :-)

Thanks in advance,
Martin R. Ehmsen
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On Wed, 2007-11-14 at 13:05 -0500, Martin R. Ehmsen
wrote:
> I'm trying to use the new IDLE support in Mail.app on Mac OS 10.5, and
> it works sort of, but it seems to miss some notifications.
> My guess is the IDLE support in Mail.app is implemented such that it  
> sets up a connection for IDLE notifications and then checks the mail  
> via another connection, and because of that the "IDLE-connection"
gets
> disconnected for inactivity after 30 min. The reason for my guess is  
> that I get the following in my logs:
..
> dovecot: Nov 14 17:43:29 Info: IMAP(amanda): Disconnected for inactivity
> 
> Is there something I can do about this problem? Is the IDLE  
> implementation in the 1.1 branch different from the implementation in  
> the 1.0 branch of dovecot?
Yes, it's different there. In v1.1 it never actually disconnects for
inactivity. It sends "Still here" notifications every 2 minutes, so if
the connection is really dead those sends should cause Dovecot to notice
the disconnection.

But is disconnection the real problem? I changed IDLE a bit also in
v1.0.6:

	* IDLE: Interval between mailbox change notifies is now 1 second,
	  because some clients keep a long-running IDLE connection and use
	  other connections to actually read the mails.
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