North American Network Operators Group
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Re: question on ptr rr

  • From: Steven M. Bellovin
  • Date: Sun Feb 08 22:15:56 2004 
In message <[email protected]>, Paul Vixie writes:
>

>
>I think the tipping point went by a while ago, and that anyone who wants
>their e-mail to be accepted will make sure their mail relay has a PTR and
>that that this PTR holds the same name used in the SMTP HELO command.

Of course, not all that long ago AT&T Worldnet got crucified -- on this 
list, among other places -- for doing just that.

		--Steve Bellovin, http://www.research.att.com/~smb