>> I never said it was. >> >> What I said was that when it’s coming from a server that doesn’t >> except inbound messages (and hence can’t generate bounces) THEN it’s >> a sign of Spam.
>Since when does a server handling outbound traffic have to accept >inbound mail? >Any setup with more than a dozen boxes usually separates in/outbound traffic I know of many of my customers I filter for don't send their outbound mail back through my filters (even though I tell them to) so they could generate bounce messages and definitely are firewalled off from the Internet on inbound TCP 25. I am pretty sure that the majority of sending mail servers on the Internet don't accept inbound TCP 25 connections.
