We are trying to impliment the ability to filter based on who is sending and use a smarthost for some of these people.
I found several articles, and ended up using this one to configure this:
What I am looking for is a way to make any domains/users who are not set up in the file to send out using the local server and DNS. I tried a few things, but so far no luck. Any ideas?
Running Ubuntu 10.04 with Postfix 2.7