Douglas Otis wrote:
A single policy record placed adjacent to the domain's MX record could
be sufficient. This would eliminate domain transversals or wildcard
search mechanisms. However, this approach creates a need to obsolete
the use of just A records as an SMTP server discovery/confirmation
method. Once an A record discovery/confirmation has been obsoleted,
then messages might not be accepted when the email-address domain is not
confirmed by the existence of an MX record.
Doug,
The MX/CNAME/A discovery process is long established process and part of
the SMTP standard for millions of systems world wide, not just the
Fortune 10, 500, 1000 or 10,000, and it includes legitimate systems with
no MX records but with a CNAME or A record.
And you want to change this long established methodology for SSP purposes?
You're kidding right?
--
Sincerely
Hector Santos, CTO
http://www.santronics.com
http://santronics.blogspot.com
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