James, On 2008-05-10 03:49 James M Galvin said the following: <snip long back-and-forth>
It is true that people can "lie" and this is checked in SpamAssassin and contributes to the SPAM score of a message. The only mechanism employed at connection time is the most basic configuration check. If the origin of a connection can not make any attempt to identify itself in a way that can be verified, even weakly, then that origin is summarily suspicious.
I've used failed forward and reverse lookups of the HELO and MTA IP for a long time as spam indicators in Spamassassin's rules, and they *are* useful spam indicators, but I think that summarily rejecting mail on this one check is summarily bad. James, I'f you've had this absolute condition added to the IETF mail setup, then please have it removed again and let Spammassassin use these lookups as two among its hundreds of weighted checks. That seems sane to me; the current situation doesn't. Henrik
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