Re: How to Keep Spammers Out
- From: "Rich Matheisen [MVP]" <richnews@xxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 20 Apr 2007 20:12:04 -0400
"Joe" <newsjoe@xxxxxxxxxxxxx> wrote:
[ snip ]
The other thing I'm surprised that MS hasn't put into Exchange is reverse
DNS lookups.
Which are pretty darned useless.
Why do you feel these are useless?
I knew I forgot something. :-)
If you find that a sender has a PTR that resolves to a name like
"adsl-02-123-62-atl.someisp.com" does that really contribute to your
estimation of the sender's trustworthiness?
--
Rich Matheisen
MCSE+I, Exchange MVP
MS Exchange FAQ at http://www.swinc.com/resource/exch_faq.htm
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