On 09 Sep 2014, at 18:15, Philipp Bruell <philippbruell at posteo.de> wrote: > does someone know if there is a RFC protocol description of the dict > protocol that dovecot is using for auth/quota/... requests? Haven't > found anything on google yet. Not really, other than the source code. http://wiki2.dovecot.org/AuthDatabase/Dict has also an example server script.