Hi Wietse, Thank you very much for your answer!
On Mon, Feb 14, 2022 at 5:55 PM Wietse Venema <wie...@porcupine.org> wrote: > The randmap() feature comes to mind. > > Instead of "relayhost = old.example" or "relayhost = new.example" use: > > default_transport = > randmap:{smtp:old.example, smtp:old.example, smtp:new.example} > > Can this technique be used in case of "new.example" is the Postfix itself, i.e. sending without the relay? E.g. like this: default_transport = randmap:{smtp:old.example, smtp:old.example, smtp:} Best regards, Danil