nanog mailing list archives

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


From: "Dave Howe" <DaveHowe () gmx co uk>
Date: Wed, 3 Dec 2003 17:29:16 -0000


Jeffrey Paul wrote:
Perhaps I'm being naïve, but this seems like a very good way to cause
spammers to suddenly start having valid PTR RRs.  Thoughts?
or limiting attacks for relay/proxy/trojan purposes targets that have valid
PTR records.... which of course ideally should be all of them.


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