[Dovecot] Dovecot-1.0.beta1: New mail sometimes fails to appear

[Reuben Farrelly]

Hi Tom,

On 23/01/2006 1:05 a.m., Tom Alsberg wrote:
> Hi there...
> 
> Having updated to 1.0.beta1, I for a while thought a bad bug with IDLE 
> handling that caused new mail in INBOX not to appear when using Mozilla 
> Thunderbird has been solved.  Although I can not reproduce one kind of 
> problem anymore, after a short while it again appears that one does not 
> always see one's new mail with Thunderbird.
> 
> I can not consistently reproduce the bug, but from some network captures 
> it indeed appears that sometimes Thunderbird has (in one of its 
> connections to the server) INBOX SELECTed and IDLE on it, new mail 
> arrives, but 10 minutes afterwards it was still not sent an EXISTS message.

I am seeing something like this too and am using Thunderbird, but I'm not sure 
that this is actually a Thunderbird problem.  I'm unsure when it first appeared 
but it's pre -beta1 anyway.

What seems to happen for me is that if the new mail is delivered into 
Maildir/new/ or a file copied in there, I don't often see it until TB does it's 
2 minute "check-for-new-mail-in-all-folders" scan.  Then it is picked up as a 
new mail.  There is no network activity from the server to the client.

However if I put a file by hand, say for example "cp /etc/hosts 
/home/reuben/Maildir/cur" into Maildir/cur/ then Thunderbird sees it 
immediately.  Dovecot sends this to the client and breaks the IDLE straight away:

367  53.927740  192.168.0.5 -> 192.168.0.8  IMAP Response: * 21 EXISTS

It's a bit strange but I can reproduce it on demand, Tom can you reproduce it 
that way too or is this a different bug?  [I think it's the same one..]

reuben