Do a postconf -Mf to show your master.cf file configuration.
> On 11 Dec 2018, at 14:47, Robert Chalmers <racu...@gmail.com> wrote: > > Where/what is the -D in your master.cf file ???? > > > > >> On 11 Dec 2018, at 14:35, Marco Fioretti <marco.fiore...@gmail.com >> <mailto:marco.fiore...@gmail.com>> wrote: >> >> /etc/postfix/master.cf: unused >> parameter: flags=D"
