John Levine wrote:
change the SHOULD [check MX & A/AAAA] to a MAY. With
that change, I'm happy with the text John proposes.
OK by me.
Hm, it is a border case, why not just say "MUST either
check [2821bis] or as minimal approximation [nxdomain]".
If you really like MAY better I think "MAY instead" is
clearer than only "MUST [nxdomain], and MAY [2821bis]".
If 2821bis is only a MAY you can't rename the result to
"nomailfqdn", it has to stay as is (= "nxdomain"), and
we can close that part of #1579, "not more applicable".
Frank
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