On Wed, Feb 5, 2020 at 12:41 PM Matus UHLAR - fantomas <uh...@fantomas.sk> wrote: > > On 05.02.20 04:25, mami64 wrote: > >Some times i found in logs (smtp outgoing) empty message-id like > > > >Feb 5 12:20:18 smtp1 postfix/cleanup[21270]: 48CJy70T20z3xcS: message-id=<> > >Feb 5 12:20:20 smtp1 postfix/cleanup[21265]: 48CJyD3tzNz3y0m: message-id=<> > >Feb 5 12:20:20 smtp1 postfix/cleanup[19334]: 48CJyD4yKCz3xvB: message-id=<> > >Feb 5 12:20:23 smtp1 postfix/cleanup[19285]: 48CJyH2nYjz3y1b: message-id=<> > >Feb 5 12:20:24 smtp1 postfix/cleanup[17592]: 48CJyH6tV0z3xNL: message-id=<> > >Feb 5 12:20:25 smtp1 postfix/cleanup[19334]: 48CJyK1Yg7z3y2C: message-id=<> > > > >In rfc 822 message-id is not required but I dont known why some times i get > >message-id and sometimes not and what it depends on > > apparently the client did not create Message-Id: header. > it's up to the client to generate it.
You can use "always_add_missing_headers = yes" in main.cf in case you need to reproduce older Postfix behaviour Luca
