[Mimedefang] OT but interesting hopefully - Spammers embrace email authentication

[David F. Skoll]

On Fri, 3 Sep 2004, Richard Cooper wrote:

> "More spam than legitimate email is currently sent using Sender Policy
> Framework, a recently introduced email authentication protocol.
> According to CipherTrust's research, 34 per cent more spam is passing
> SPF checks than legitimate email because spammers are actively
> registering their SPF records."

So the simple solution is to penalize mail that passes SPF tests rather
than mail that fails it. :-)  If these results are true, then the
scores will fall naturally out of SpamAssassin's genetic weighting
algorithm.

Regards,

David.