[Dovecot] Why is "UIDVALIDITY changed" fatal?

[Timo Sirainen]

Pseudo mail caused this one too. I'll have to remember to start testing
changes with mboxes having it too. Fixed it in 1.0-stable and tests.

But anyway if you have both UW-IMAP/Pine accessing the mbox at the same
time as Dovecot, there can still be problems with flag changes getting
lost. With mbox_lazy_writes=no you could get Dovecot to show changes to
Pine earlier, but Pine doesn't have an option to do the same for
Dovecot.

Those UID errors sound a bit troubling.. Hopefully they were fixed with
this change. I don't think it should happen even if there's lots of
mixed Dovecot/Pine/UW users accessing the same mbox..

On Tue, 2005-04-26 at 21:41 +0100, Chris Wakelin wrote:
> I just looked in the logs (sorry, should have done that first) and it's 
> been giving errors "mbox sync: UID inserted in the middle of mailbox 
> .../INBOX (xxx > yyy)".
> 
> Chris
> 
> Chris Wakelin wrote:
> > Hmm, now I'm seeing problems with flag updates. It seems dovecot isn't 
> > always adding X-Status and X-UID headers (or updating the latter) when a 
> > message is read - I seem to have a mixture of "Status: O" or both 
> > headers missing. Is this because of mbox_dirty_syncs?
> > 
> > It didn't used to happen before today's fixes (but did happen before the 
> > very latest ones) Symptoms are Thunderbird (or Pine) think they've 
> > updated the flags, but when the folder is reopened, it reverts. I've 
> > tried deleting the dovecot.index* files.
> > 
> > Best Wishes,
> > Chris
> 
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