Hello, I seek advice. For mail received on port 25 for my domain, the usual local transport should be used (as accomplished with mydestination=mydomain), but for mail submitted by authorized users on port 587, I want all such mail (even for recipients@mydomain) to get sent via SMTP to a separate smarthost for additional filtering. In other words, for port 587 I essentially want mydestination to be blank. Can this be easily accomplished within a single postfix instance (using "-o options" within master.cf), or is this a situation where having multiple postfix personalities (multiple instances using postmulti) is the way to go?
Thanks! Alex
