Marshall Rose
<mrose+internet(_dot_)ietf(_dot_)mxcomp(_at_)dbc(_dot_)mtview(_dot_)ca(_dot_)us>
wrote:
On May 12, 2004, at 11:51, John Leslie wrote:
Ideally, the DNS response will contain the IP address matching the
SMTP sender, indicating that the SMTP sender is authorized, or a
complete set of authorized IP addresses (indicating that the IP
address of the SMTP sender is not authorized).
a clarifying question: earlier in your message when the MARID RR is
described, there is no mention of IP addresses embedded in the RR. (or
perhaps there was and i missed it).
I was intentionally vague, not wanting to get bogged down in syntax
if it could possibly be avoided.
However, the inspiration (as I mentioned) was Dave Crocker's CSV
proposal, which uses SRV records, in which the RR contains a "target"
domain name which refers to one or more A(ddress) records. DNS servers
automatically return the IP addresses as "additional" data.
one of the things that the 30% solution has going for it is that it
concisely lists whats in the RRs, what the operands are and what the
operations are. it would be helpful in understanding the 40% solution
if it was similarly organized.
I perfectly willing to (try to) work with Dave Crocker and anyone
else interested in fleshing out the details; but it was my understanding
that we were planning to pass semantics to DNS experts who would do
that kind of work. Is that still part of the game plan?
--
John Leslie <john(_at_)jlc(_dot_)net>