>>
>
> Sometime flawed technologies still have uses. SPF breaks email
> forwarding. But using that flaw I may be able to detect forwarding
> sources through SPF failures. The idea being that if it's legitimate
> email but SPF is wrong then the message was likely forwarded from a
> legitimate source.
Actually, email forwarding without rewriting breaks email. It's what
prevents us from doing domain based reputation assignment.
--
Ian Eiloart
IT Services, University of Sussex
01273-873148 x3148
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