I'm migrating virtual mail domain/users to new Postfix server, new server setup and working, I'm altering MX to point to the new server;
I want the 'old' server to forward any new traffic over to the new server, last time what I used was static entry in main.cf like: transport_maps = static:smtp:new.server.tld that doesn't seem to be doing anything for me this time..? what do I need ? can I do this on domain basis, individual domains at a time ? or whole server at once ?