So, a domain name erroneously appears in an address field and the references
host erroneously accepts mail it shouldn't.
This degree of problematic operation is not likely to get solved with a new
DNS
construct.
this specific problem will get solved with a simplification of how email
uses DNS.
If someone is sending out invalid email addresses, then that needs to get
fixed,
rather than working on some post-hoc mechanism.
the two problems are not mutually exclusive. but we can lessen their
combined effects.
Thus, disabling AAAA checking seems to provide much cleaner error
behavior.
Reasonable idea.
Let's do it for all Internet services, not just email.
worth considering. but for now only 2821bis is on the table.
_______________________________________________
IETF mailing list
IETF(_at_)ietf(_dot_)org
https://www.ietf.org/mailman/listinfo/ietf