[Mimedefang] Reverse DNS Testing

Michael Sofka sofkam at rpi.edu
Wed Jul 2 15:06:01 EDT 2003

On Wednesday 02 July 2003 13:26, Lucas Albers wrote:
> I do reverse dns and dns valid lookup, in my sendmail configuration.
> I don't get any false positives.
> I get approximatelly 1 complaint in every 25,000 messages.
> I guess it depends on your situation!...

That's not surprising.  Spammers will provide their own reverse DNS
if needed.

Michael D. Sofka              sofkam at rpi.edu
C&CT Sr. Systems Programmer    Email, TeX, epistemology.
Rensselaer Polytechnic Institute, Troy, NY.  http://www.rpi.edu/~sofkam/

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