> > I have seen mail bounced because of a > > mismatch between SMTP greeting name and PTR record name. It's not as > > common as the simple "is there any PTR record" check, but it does > > happen. > > - it's clear violation of RFC 5321 (and former 2821, 821) - server MUST NOT > reject connection because of that.
In today's spam-filled environment, a "MUST NOT" from RFC 5321 probably rates considerably lower than reducing the total amount of spam. So *if* a postmaster finds out that rejecting mail due to such a mismatch indeed reduces the spam level for his users - he'll probably do it. He may not even have any idea what the RFC says... All I'm saying is - don't expect the RFCs to have the force of law. Steinar Haug, Nethelp consulting, sth...@nethelp.no _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
