On Thu, 12 Jul 2012 09:08:19 +0200
"Andrzej A. Filip" <andrzej.fi...@gmail.com> wrote:

> Would you suggest/recommend  using spf-bayes?
> [auto-learning of "worth" of given domain SPF record]

That is an interesting idea... store tokens like:

     example.com*spf-pass

and compute probabilities.

A while ago, I did an informal count of messages we had processed and
found that spammers were slightly more likely to have an SPF "pass"
than non-spammers.  It wasn't a huge difference and I don't know if
it's still the case because SPF is now more widely adopted than
before.  (Spammers tend to be early adopters of technology.)

Regards,

David.

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