On Wed, Oct 22, 2003 at 05:46:47PM -0700, Rick Duvall wrote:
> Is there a way to refuse an SMTP connection if the connecting host doesn't
> have an MX record in DNS? Is there a downside to doing this?
How many hosts on your network have MX records ? (I'm having to assume that
you mean: host a.b.c.d connecting:
d.c.b.a.in-addr.arpa (ptr) -> z.example.tld,...
z.example.tld (mx) -> some.host.example.tld,...
some.host.example.tld (a) -> a.b.c.d,...
or do you not mean that? If not, your question is probably meaningless...
MBM
--
Matthew Byng-Maddick <mbm@???> http://colondot.net/
