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. By forcing a policy of accurate reverse DNS, most of the home-broadband- SPAM factories are shut down. Most ISPs will reject mail if the DNS doesn't reverse correctly, AOL being one of the largest.