On Tuesday 08 August 2006 15:25, J.D. Falk wrote:
> On 2006-08-08 11:43, Scott Kitterman wrote:
> >> Sounds like false hope to me; as a big receiver, I can't imagine that
> >> I'd ever want to blindly trust assertions made by an unknown sender.
> >
> > As both you and John L point out, this is a big issue.  That's why I was
> > thinking about it being something in DNS related to the policy record so
> > that it would be at least slightly harder to lie about it.  It's also why
> > I started with IF...  I recognized that if it can be trivially spoofed,
> > then there's no reason to do it.
>
> We can accomplish that much without any changes to SMTP:
>
> - SMTP conversation happens as per usual
> - receiver looks up MAIL FROM domain, checks SSP
> - receiver decides whether to accept the message and check the
> signature, or reject based on non-DKIM-related criteria
>
> Or am I missing something?

That's the lines I'd been thinking along.

Scott K
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