imapsieve: mailbox Trash: FLAG event

[Stephan Bosch]

Op 30/05/2018 om 17:08 schreef Peter Schiffer:
> Hi all,
>
> after upgrade from Dovecot 2.2 to 2.3 I started to see that emails from
> Trash folder are automatically deleted after ~7 days. Email clients are
> not configured to automatically expunge or empty trash on log out (I
> see this behavior for multiple mailboxes, with different clients).
>
> With mail_debug enabled, I see this log message for every email that
> gets deleted from Trash:
>
> May 29 08:02:17 hostname dovecot: imap(some at mail)<7725><xxb6+VFtL+JT0CE
> 8>: Debug: imapsieve: mailbox Trash: FLAG event (changed flags:
> \Deleted)
>
> I have Dovecot 2.3.1 (8e2f634) and Pigeonhole 0.5.1 for sieve. My
> configuration can be found here:
> https://github.com/pschiffe/mailcow-dockerized/tree/master/data/conf/dovecot
>
> There is enabled support for sieve config in sql, but all sieve tables
> are empty, and there are no sieve filters for Trash flagging.
>
> Do you know how to find the source of that Trash flag event? I need to
> disable it or to configure it so it deletes emails at least couple of
> months old.

That debug message just indicates that IMAPSIEVE noticed a flag change 
event, not that Sieve is the entity setting the flag.

Likely, the client (or one of several clients you're using) is doing 
this explicitly: IMAPSIEVE would only log that debug message for an IMAP 
STORE command, which is issued by the client.

Regards,

Stephan.