[Mimedefang] filter-relay, rejection on bogus helo

[David F. Skoll]

On Tue, 6 Jan 2004, Lucas Albers wrote:

> You could make the assumption that the helo (if an ip) string should match
> the ip address on the first 3 octets of the address?
> $helo = xxx.xxx.xxx = $ip = xxx.xxx.xxx

Not if you're NAT-ing.  If I run an SMTP client on my desktop, it will
think its IP address is 192.168.2.3 but the real address seen by the
server will be 209.217.122.117.

Regards,

David.