On Mon, Sep 06, 2004 at 01:42:08PM +0100,
Graham Murray <graham(_at_)webwayone(_dot_)co(_dot_)uk> wrote
a message of 16 lines which said:
I agree with all of that. Yet at the moment there is no PRA header
inserted by the MTA. All the other headers would be left intact and
each email would have just one additional header (showing the PRA as
calculated and authenticated) inserted by the final MTA or MDA.
Why only one? Why not a "Responsible-From" inserted at each
administrative organization boundary? (Like "Received" inserted at
each MTA boundary.)
Each SenderID machine and each MUA would use the first
"Responsible-From" (the last inserted) to find the PRA. But a lot more
information would be available for debugging.