The alternative would be very squirrelly when you think
of the general case of multiple signers in the path.
That's not an unreasonable point, but it depends how important you think
it is to support inconsistent assertions on the same message. If you have
assertions that this is the author's real age, or that is the author's
real e-mail address, who cares if different signatures can't make
different assertions?
I like the idea of limiting additions to DKIM to things that are related
to the signature itself rather than to other aspects of the message.
Presumably we can have an argument whether "this is the real e-mail
address of the signer" (not the author) is sufficiently related.
Regards,
John Levine, johnl(_at_)iecc(_dot_)com, Primary Perpetrator of "The Internet
for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
_______________________________________________
NOTE WELL: This list operates according to
http://mipassoc.org/dkim/ietf-list-rules.html