>Playing around with ideas here.  This one removes the "l=0" signature stuff
>and instead makes DKIM-Delegate into a more self-contained thing, which I
>believe was suggested (or at least inspired) by Stephen's comments.  There
>is still the potential for abuse during the ephemeral relationship period
>(i.e., prior to expiration), but it it is now an indirect attack on the
>author domain rather than a direct one.  Perhaps that's more palatable in
>this scenario.
>
>Comments welcome.

This looks an awful lot like my draft-levine-cdkim-00 and
draft-levine-dkim-conditional-00 except that mine has more bits of
DKIM in the cdkim signature so it can sign To and From to limit the
range of spoofage.

R's,
John

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