"Scenario B is technically possible but makes no sense. If you have the
ability to sign mail, why wouldn't you sign your own?"
because this is a special purpose domain simply to manage 3rd party
signage, the domain itself will not send any mail.
Right, that's scenario A.
Saying I only sign 3rd party would allow people to regard any purported
mail from that domain with a large degree of suspicion
Right. How is this usefully different from "I send no mail"?
R's,
John
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