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?
--
J.D. Falk, Anti-Spam Product Manager
Yahoo! Communications Platform Team
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