hello, I checked the doc about the mail relay in postfix and still not clear about two issues.
I have mail sending from machine A to machine B, machine B is a relay server forwarding the email to machine C (target machine). I want to make sure there is no emails bouncing back from either machine B or machine C to machine A. can it be done? If machine C is down, relay machine B will spool all emails till machine C is up. what configuration adjustment should I make for relay machine B? is there a way to adjust the mail holding days in the relay machine B? any help is appreciated. Tom
