Re: AOL rejecting mail from IP's w/o reverse DNS?
You mean like Level3? -----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Steven M. Bellovin Sent: Wednesday, December 03, 2003 2:27 PM To: Matthew Crocker Cc: Christopher X. Candreva; nanog@nanog.org Subject: Re: AOL rejecting mail from IP's w/o reverse DNS ? In message <01D22399-25C5-11D8-940C-000A956885D4@crocker.com>, Matthew Crocker
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?
Right -- and then folks will start creating wildcard PTR records... --Steve Bellovin, http://www.research.att.com/~smb -- David Temkin
You mean like Level3?
Well,... proxying (in any shape) should, hopefully, not happen prior to having a decent downstream trust relation onboard... (?)... mh
-----Original Message----- From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of Steven M. Bellovin Sent: Wednesday, December 03, 2003 2:27 PM To: Matthew Crocker Cc: Christopher X. Candreva; nanog@nanog.org Subject: Re: AOL rejecting mail from IP's w/o reverse DNS ?
In message <01D22399-25C5-11D8-940C-000A956885D4@crocker.com>, Matthew Crocker
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?
Right -- and then folks will start creating wildcard PTR records...
--Steve Bellovin, http://www.research.att.com/~smb
-- David Temkin
participants (2)
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Dave Temkin -
Michael Hallgren