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

Wed Dec 3 21:03:42 UTC 2003

> 
> 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 at merit.edu [mailto:owner-nanog at merit.edu] On Behalf Of
> Steven M. Bellovin
> Sent: Wednesday, December 03, 2003 2:27 PM
> To: Matthew Crocker
> Cc: Christopher X. Candreva; nanog at nanog.org
> Subject: Re: AOL rejecting mail from IP's w/o reverse DNS ?
> 
> 
> 
> In message <01D22399-25C5-11D8-940C-000A956885D4 at 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
> 
> 