Re: AOL rejecting mail from IP's w/o reverse DNS?

[Dave Temkin <dave () ordinaryworld com>]

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