Re: EAI and ADSP/DMARC

> Yes, I can always reject mail I don't like, but I doubt this will fly if
> we add that in the DMARC spec and hand it over to IETF.

If/when DMARC comes into the IETF, you will have the same endless
arguments about that as in the DKIM/ADSP and SPF work about what who
can tell whom to do with messages and how.  John isn't saying that
*DMARC* will or should reject anything.  DMARC will simply say call
this a validation failure, just as it would if there were a fake From
address in the message.  John's saying that any MTA can choose to
reject such a message, because it doesn't like group syntax in From or
for any other reason.

There's already an applicability statement in here that says this is
for essential uses and no others, and there's a warning in the
Security Considerations that misuse can result in non-delivery of
mail.  What you're concerned about is already addressed.

Barry
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