On 27.11.2012, at 8.39, Timo Sirainen wrote: >> userdb { >> driver = passwd >> } > > Both of these lookups should be done by auth-worker processes. So why is it > the auth process that complains?
Because of a bug in v2.0.16+ :( http://hg.dovecot.org/dovecot-2.1/rev/8e5d9d88e250 As a workaround you can use for existing versions: userdb { driver = passwd args = blocking=yes }