Re: [exim] Exim4 + greylistd + spf

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Autor: Chris Lightfoot
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A: Chris Blaise
CC: exim-users
Assumpte: Re: [exim] Exim4 + greylistd + spf
On Thu, Aug 17, 2006 at 10:46:00AM -0600, Chris Blaise wrote:
> > Personally, I find SPF pretty much useless. Yes, you can use
> > it to score some mail, but implementation is not very
> > widespread, so you either have to go hard-core and reject, or
> > accept the mail anyway, in which case, why bother?
>
>     What's "hardcore" about rejecting mail from addresses that are in
> violation of published SPF records?


The interesting question about any individual piece of
mail is, ``does the addressee want to receive it?'', not,
``through which server/s has it passed, and are they
controlled by the owners of the sending domain?''. SPF may
tell you the answer to the second question, in some cases;
this may give you evidence about the answer to the first,
but you certainly can't in general determine the answer to
the first question from the answer to the second!

--
``After all, what is your hosts' purpose in having a party? Surely not for
you to enjoy yourself; if that were their sole purpose, they'd have simply
sent champagne and women over to your place by taxi.'' (P. J. O'Rourke)