Re: reverse DNS?

[Bruno Wolff III]

On Tue, Mar 06, 2001 at 10:07:46AM -0000,
  John Conover <[EMAIL PROTECTED]> wrote:
> As a matter of policy, is it reasonable to reject messages that fail a
> reverse DNS lookup on HELO's FQDN/authentication?

I don't think this buys you much in the way of spam protection and can
block legitimate email. Many dialup and dsl connections will have a reverse
DNS entry in the service providers domain space.

If you want to block dialups, you are probably better off using the DUL
list to do it.