Wietse Venema:
> Douglas Otis:
> > The current assumption used when asserting DKIM policy is that this  
> > policy might apply across _all_ protocols used to carry messages that  
> > might contain DKIM signatures.  Either DKIM policy records need to  
> > declare the scope of the protocols covered by the policy, or the label  
> > used to discover a policy should employ different labels.
> > 
> > Add:
> > 
> > Policy assertions for _SSP records are limited to messages exchanged  
> > by SMTP.  When other protocols are used to receive messages, the  
> > appropriate policy should be applied upon receipt, and/or the protocol  
> > should be tracked within the message.  One method for such tracking  
> > could be implemented using Authenticated-Results headers.
> 
> Excuse my ignorance, but why limit DKIM (or SSP) to information
> that is delivered via SMTP? They can work with any transport that
> uses RFCx822 for content and that uses DNS for name resolution.

-1 for the updated proposal.  Cosmetic surgery on a dead horse
won't bring it back to life.

        Wietse
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