[67334] in North American Network Operators' Group
Re: question on ptr rr
daemon@ATHENA.MIT.EDU (Andrew - Supernews)
Sun Feb 8 16:02:35 2004
To: nanog@merit.edu
In-Reply-To: <g3znbtxqle.fsf@sa.vix.com> (Paul Vixie's message of "08 Feb
2004 20:29:17 +0000")
Date: Sun, 08 Feb 2004 21:01:20 +0000
From: "Andrew - Supernews" <andrew@supernews.net>
Errors-To: owner-nanog-outgoing@merit.edu
>>>>> "Paul" == Paul Vixie <vixie@vix.com> writes:
Paul> that's one check of many. the PTR has to match the HELO, which
Paul> means all of the worms and spammers who forge @yahoo.com
Paul> addresses and use YAHOO.COM as their HELO will continue to get
Paul> hammered.
If you're going to get picky about HELO names, then it's better to
require that the HELO has an A record pointing to the connecting IP,
rather than look at PTR.
--
Andrew, Supernews
http://www.supernews.com
