Christian Kivalo wrote: > whats the output of 'hostname -f' > > whats in your /etc/hostname and /etc/hosts?
That was indeed the problem. The output of `hostname -f` was "localhost", indicating how dovecot gets that result as well for its "hostdomain". Changing the first line of /etc/hosts to 127.0.0.1 full.domain.name nameofthisparticularcomputer localhost , `dovecot --hostdomain` now returns "full.domain.name", as I wanted. Thanks a lot for your quick responses Christian! Kind regards, Arie