Dave Crocker wrote:
All.
How else did they register those names and populate them with records?
They got there with commercial DNS management systems. Those systems
are incredibly slow to change. Go read
draft-iab-protocol-success-03.txt Section 2.1.1 bullet 2. While some
DNS management systems allow for an MX records, their main purpose is to
handle everyday devices that show up on a network, web servers, and
other hosts that have nothing to do with mail. This is most true in the
enterprise, but also in the service provider. In the SP environment
records sometimes aren't even on disk, but generated on the fly.
In those cases a code change is necessary to generate an appropriate
ADSP record on the fly. More code dependency. John will say, but "who
cares about adsl-247-6-fixip.some-domain"? If the point was for senders
to be able to take responsibility for their domains, they care.
Eliot
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