[Dovecot] troubles with broken clients (iPhone) - again

[Timo Sirainen]

On Tue, 2009-07-07 at 10:02 +0200, Federico Bianchi wrote:
> The symptoms: when the Mail application is "closed" on the iPhone, Outlook 
> still says the mailbox is in use; a Dovecot imap process is still active 
> for that user even after a few minutes (manually killing it releases the 
> lock, thereby leaving the inbox available for Outlook).

That's strange. Normally an IMAP process shouldn't be holding any locks
at all. Can you check if there are any *.lock files that get deleted
when killing the imap process?

> that's why I asked you whether there is a way to tell Dovecot only 
> one POP3 or IMAP process from the same user, the latest one, can be active 
> at the same time, closing and disconnecting all the others.

No.

> pop3_lock_session(pop3): yes

This means that during the whole POP3 session Dovecot locks the mailbox
by creating dovecot-uidlist.lock. If it can't, it gives the "mailbox is
in use" error. So I could understand if there was a long-running pop3
process holding the lock, but imap processes really shouldn't be doing
that..
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