• superinterstellar@gmail.com <superinterstellar@gmail.com> 2015.01.28 11:53:

Also could you advise which dovecot are you using?

Bleeding edge (latest and hopefully greatest compiled from HG):

2.2.15 (7557234ac0f4): /etc/dovecot/dovecot.conf

Pigeonhole version 0.4.6