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Recording receiver policy in "Received-SPF:" headers (was: New SPFv1 spec: draft-schlitt-spf-classic-02pre1)

2005-06-06 13:29:56
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Mark Shewmaker wrote:
If reciever policy says that a failing mailfrom should be considered a
PASS because the verified HELO is trusted, how is that documented in
received-spf?

There lies another somewhat fundamental misunderstanding in your question 
(no offense).  The "Received-SPF:" header is not supposed to document 
receiver policy, but only the results of pre-performed SPF checks.

If a MUA reads "Received-SPF:" headers, it is not the MTA (who generated 
these headers) that is the receiver, but the MUA itself.  The MUA has to 
apply its own receiver policy to the pre-determined SPF results.

It _may_ be useful to convey server-side receiver policy to client MUAs, 
but it isn't really needed to make the "Received-SPF:" headers a complete 
concept.
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