What does Postfix stamp in the email headers when email comes into it? I need to control this for spam filtering purposes. I started using amavis and a header line I was depending on, X-Originating-IP, disappeared. I thought postfix was adding this header line, but maybe it wasn't. I need something like that that sticks out. What I'm trying to do is rip the IP address that connected to my server out of spam email and build a list. Then I'm using iptables QUEUE target to attempt to block spam before it even gets on to my system.
With amavis, I guess that postfix receives a message, throws it to amavis, and then amavis throws it back to postfix on another port. Why isn't postfix stamping the remote IP address before it hands the email off?
