Boyd Lynn Gerber wrote:
spf3 should have "A" for a,ip4,ip6 and distinguish by
syntax. There are far too many errors of this sort.
It would be nice.
But it cannot work. It is like saying that it would be
nice if all odd numbers are primes. Now if that future
SPF has no macros some syntax issues disappear, IPv4 is
anyway obsolete, and this version could try to "anything
with a colon is an IPv6" or similar.
Ignoring decades of lessons learned why mixing name and
IP syntax is wrong. Neither URIs (for IPv6) nor SMTP
(IPv4 + IPv6) allow this, they require square brackets
to disambiguate domains and domain literals.
Frank
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