On Mon, Aug 22, 2005 at 01:41:05PM -0700,
administrator(_at_)yellowhead(_dot_)com wrote:
If <pobox.com> would only reject on no PTR record like the error message
says, that would be great. Unfortunately, they also check for an "A" record
on the name recovered from the PTR lookup. It is this check that causes all
the false rejects, and my complaints to pobox have fallen on deaf ears.
Not weird. Suppose >any< ptr record would do, how long do you think until
some large and lazy provider sets all ptr records to "any" or perhaps to
"example.org" ...
RFC 1034 3.6:
"PTR a pointer to another part of the domain name space"
and about its RDATA:
"PTR a domain name"
therefore PTR cannot contain an arbitrary string.
RFC 1034 5.2.1.2:
"A type PTR query is used to get the RR with the primary name of the host.
therefore PTR used in the in-addr.arpa zone cannot point to an
arbitrary domain.
Pobox is right to check. They are NOT false rejects.
Alex