Once upon a time, Barry Shein <b...@world.std.com> said: > It's very useful for blocking spammers and other miscreants -- no > reason at all to accept SMTP connections from troublesome > *.rev.domain.net at all, no matter what the preceding NNN-NNN-NNN-NNN > is.
If you are going to block like that, just block anybody without valid reverse DNS. If you don't trust provider foo.net to police their users, why trust them to put valid and consistent xx-xx-xx-xx.dyn.foo.net reverse? I only see a use for reverse DNS for router interfaces (for useful traceroute info) and servers (and only really SMTP servers). Most of the rest is fluff, often out-of-date, uselessly auto-generated, etc. -- Chris Adams <c...@cmadams.net>
