Ljubomir Ljubojevic <office at plnet.rs> wrote: > I use it too. Reverse-DNS check is best SPAM repellent there is. Only > mail from properly set mail servers is accepted. That's fine if your check is that a reverse DNS entry exists, or that the HELO/ELHO exists in forward DNS or, if your MTA is smart enough, it does a reverse-forward* check, but if you only check that the HELO/ELHO matches the reverse entry then you're blocking a bunch of valid mailers because there is no specification requirement that those two match (and they don't in the general case). (*) reverse-forward here means do a reverse lookup on the connecting IP, then doing a forward lookup on the result, and then ensure that original IP is one of the 'A' records resolved from the forward lookup. Devin -- I don't suffer from insanity. I enjoy every minute of it.