Scott Silva wrote: > If you can't reject during the initial SMTP phase, then your NDR's of spam, > with their possible forged envelope addresses, will also be spam. So, if you > can't drop at the initial conversation, or it is relayed from a backup MX, it > is your message, and your problem. Just don't generate NDR's. If you can't > return at SMTP, you will need to drop it.
I disagree. Backscatter is bad, but turning e-mail into something totally unreliable will damage it more than spam has. Silently dropping mis-addressed e-mail messages is a violation of a MUST requirement of a standards-track RFC. It's not something you should do lightly (or indeed at all). Sometimes, you have no choice but to generate an NDR. You might in all good faith accept mail for a recipient only to find out he's set up a .forward file and the destination server refuses the mail. So while we should all strive to minimize NDRs, we can't eliminate them. Regards, David. _______________________________________________ NOTE: If there is a disclaimer or other legal boilerplate in the above message, it is NULL AND VOID. You may ignore it. Visit http://www.mimedefang.org and http://www.roaringpenguin.com MIMEDefang mailing list [email protected] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
