Nandini Mocherla wrote, at 02/06/2009 12:49 PM: > I am new to postfix and thinking for a way to block the email address > which does not come from that domain. For example, if someone with a > @xxx.com email sends to a list it must come from a server in the xxx.com > domain else it should be rejected. Is it possible to do this?
Have you thought this through? For example, nearly all legitimate gmail.com messages come from a server in the google.com domain. That's just the tip of a rather huge iceberg. A rule like this will reject an enormous amount of legitimate mail. Don't take my word for it, review your mail logs and see for yourself.
