North American Network Operators Group

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

  • From: Steven M. Bellovin
  • Date: Wed Dec 03 14:29:16 2003

In message <[email protected]>, Matthew Crocker 

>AOL says the PTR record needs to be assigned.  It doesn't specify it 
>has to match the 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,