On Sat, Feb 11, 2017 at 01:00:51AM +0100, Patrik Laszlo wrote: > But where? I don't know Postfix, sorry.
http://www.postfix.org/DEBUG_README.html#mail Post the output of: $ postconf -n $ postconf -Mf Find a message in the queue that is deferred due to this problem. As root: # postcat -eq <queue-id> | grep content_filter also post that output. > Which setting? master.cf, but which? Turns out it is not master.cf, see above. -- Viktor.