David B Funk writes:Some lame or misconfigured clients will take the DNS name from the user's address and use that for a HELO name. So I do not do that check on my MSA for our clients, but do enforce it on all our incoming MTA servers.
Apple's Mail.app, for one, if I recall correctly.
Eudora as well. (On this message you'll see "Received: from AVATAR.speed.net" despite the fact that such a host doesn't exist - it's taken avatar from my computer's local host name and speed.net from my email address.)
Kelson Vibber
SpeedGate Communications <www.speed.net>
