North American Network Operators Group
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Re: AOL rejecting mail from IP's w/o reverse DNS?

  • From: Dave Temkin
  • Date: Wed Dec 03 15:05:14 2003 
You mean like Level3?

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of
Steven M. Bellovin
Sent: Wednesday, December 03, 2003 2:27 PM
To: Matthew Crocker
Cc: Christopher X. Candreva; [email protected]
Subject: Re: AOL rejecting mail from IP's w/o reverse DNS ?



In message <[email protected]>, 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