Bill Hacker wrote ......... > "Real folks" MTA have DNS creds. Botnet WinZombies do not. QED.
The facts of everyday email receiving is some very large organisations give out false HELO / EHLO and/or have non-resolving hosts. Perhaps it really is time for a SMTP RFC stating that: (1) HELO / EHLO must resolve to the IP address of the sending server; (2) The sending server (MTA) must have a resolving host name. Exim provides excellent tools for rejecting spam but when large organisations, some operating internationally, can not care less the dilemma for others is whether to adhere to one's own standards or succumb to accepting spam, virus and Trojans into the system. I reject virtually everything not 100% correct. It produces a (so far) 100% spam free operation. A selection of other people's standards can be seen on sys.u226.com/t21/t21.php Paul. -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
