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

Dave Howe DaveHowe at
Wed Dec 3 17:29:16 UTC 2003

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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