On Fri, 2005-04-01 at 20:19 -0600, Mark A. Lewis wrote:
I have never understood the precived connection between reverse DNS and spam. I have seen some go as far as if the reverse DNS does not match the senders domain they will kick it.
Mostly because a trojaned machine on a broadband connection spewing SPAM will not have a valid reverse DNS entry.
Riight. Ever done a reverse lookup on a RR IP? Rogers? SBC? All of them will have valid reverse entries.
By forcing a policy of accurate reverse DNS, most of the home-broadband- SPAM factories are shut down.
I would argue that using that logic none of them will be shut down.
Not trying to pick any fights here, I just feel very strongly that the logic is very flawed and am looking for some real justification of this.