On Fri, Jul 7, 2017 at 11:12 PM, Seth Blank <[email protected]> wrote:
> Or maybe, put a different way, the question is: what's the simplest way,
> with the least delta to the spec, that allows for transmission of selectors
> and source ip? This would enable DMARC reports for messages delivered due
> to ARC to have the same report payload as messages delivered directly.
>
I would suggest not specifying it at all, and letting implementations
figure out some private way to do it that works for them.
To give a real example, OpenARC could put it in A-R or A-A-R if it wants
to, to be consumed downstream by OpenDMARC. But the ARC RFC doesn't have
to say that this is "the" way to do it. This is fine since RFC7601 says
anything else that ever sees an unknown ptype.property pairing ("header.s",
for example) is not supposed to use it.
-MSK
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