Re: [exim] Excessive amount of SPAM

Walt Reed wrote:
>
> As for the other issue of people using freemail but other MTA's, well,
> that's the breaks. Yahoo and hotmail are forged SO OFTEN that makes
> sense to have this restriction. If you send from outside of yahoo's
> servers, the domain keys signature is going to be missing as well. It
> would be valid to also use spamassassin to score very high any yahoo
> mail that is missing a DK signature. My example is one way of handling
> it. There are many others which may be better. I would welcome any
> alternatives that would result in a lower FP and still be effective.

Just bear in mind that you're effectively reimplementing a weaker form
of SPF, with all the problems that brings.

- Marc