On Dec 3, 2003, at 10:42 AM, Christopher X. Candreva wrote:
On Wed, 3 Dec 2003, Randy Bush wrote:
you're right. it will be. people will have to clean up their in-addr.arpa. or am i missing some reason they can't, other than laziness?
See, this is the war I didn't want to start again. Unless I'm thinking of a discussion on a different list -- I was sure in the whole Verizon "spam measures hurting other servers" thread, the whole blocking w/o IN PTR records had come up, with people saying they were on hosting where they couldn't change PTR records, and the clients who couldn't get mail from small offices with Exchange servers on DSL lines where the ISP hadn't configured reverse DNS . Then there was the comment on how reverse DNS was meaningless, and did you still run identd ?
AOL says the PTR record needs to be assigned. It doesn't specify it has to match the @domain.com in the MAIL FROM: header. Wouldn't it be enough to make sure every IP address you announce has a PTR and matching A record? Hasn't this been a requirement for MANY services for MANY years? -- Matthew S. Crocker Crocker Communications, Inc. Vice President PO BOX 710 Greenfield, MA 01302 P: 413-746-2760 F: 413-746-3704 W: http://www.crocker.com E: matthew@crocker.com