[Dovecot] imap locking spool?

[Mark Hedges]

On Tue, 3 Mar 2009, Timo Sirainen wrote:
> > > > How does IMAP lock the /var/spool/mail/user file?
> > > mbox_read_locks and mbox_write_locks defines it.
> >
> > mbox_read_locks = fcntl
> > mbox_write_locks = dotlock fcntl
> >
> > Unfortunately openwebmail only respects dotlocks.  (or
> > flock, but procmail doesn't use flock, or doesn't say it
> > does.)
>
> You can change those settings. For example:
>
> mbox_read_locks = flock
> mbox_write_locks = dotlock flock
>
> Now Dovecot is compatible with openwebmail. And with
> procmail both are still protected by the dotlock.

No, openwebmail only has the choice of either dotlock or
flock, but not both.  So in this case, procmail could
deliver using dotlock but openwebmail wouldn't know because
it's only watching for flock.  Welcome to my hell!

Mark