Ruben Safir: > Can't I get postfix to bounce this when it is coming outside the > nextwork?
Yes, but then you would not receive the following email: Received: by mrbrklyn.com (Postfix, from userid 1000) id 735FF16115B; Sat, 10 Oct 2015 13:10:56 -0400 (EDT) Date: Sat, 10 Oct 2015 13:10:56 -0400 From: Ruben Safir <ru...@mrbrklyn.com> To: postfix-users@postfix.org That's your posting that started this thread. There are better ways to block forgeries. Look into DMARC. Wietse