The question that I haven't seen addressed directly
is why it's so important to provide ADSP for domains
that don't exist.
Eric explained it pretty well I thought. We need the NXDOMAIN check so
that use of arbitrarily selected host name don't immediately defeat ADSP.
Mail filters often do that even though they don't check DKIM and don't
So? Are you saying that because a practice is already in use it
therefore isn't a candidate for specification?
So what's the point of importing it into ADSP?
The point is so we can make certain that those who aren't currently
employing the practice will do so and to make sure that the practice
gets itself into a standards document from this body so that we don't
have to guess whether it's being used or not.
I honestly don't understand the resistance to something as trivial and
well understood as an NXDOMAIN check.
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