> you shouldn't be changing IP numbers around here. rather you need to set
> your "behind the firewall" DNS up so that your NT machine is the MX host
> for domain(s) in question. The mail server will also need to be
> configured to accept mail for these domain(s) - with an entry in the
> sendmail.cw in current sendmails. It is indeed the case that a mail server
> will only accept mail for its *IP number*, but it can also be configured
> to accept for any number of *domains* (which is the important issue since,
> for the most part, e-mail is addressed to FQDNs, not IP numbers).
>
OK so we should avoid network address translation here. We are in the
process of taking our ISP connection off our NT box and putting it on
a RedHat box, very cheap firwall, I have set up the firewall rules to
forward smtp connection straight to the NT server. According to your
response the NT server should handle the incomming email with no
reconfiguration. This is what I thought, however while the firewall
rules allow email out, email in is not handled. Here is the output of
ipfwadm -F -l:
-------------START---------------
IP firewall forward rules, default policy: deny
type prot source destination ports
acc/m all 192.168.0.0/16 anywhere n/a
acc tcp anywhere 192.168.2.2 1024:65535 ->
smtp acc tcp 192.168.2.2 anywhere smtp ->1024:65535
acc tcp 192.168.2.2 anywhere http-> 1024:65535
acc tcp 192.168.2.2 anywhere telnet -> 1024:65535
deny all anywhere anywhere n/a
-------------END---------------
192.168.2.2 is the NT serevr. Given that a) the NT server handels
mail for this domain now, b) that the firewall should be transparent
to the NT server, c) that there is no domain name changes, this
configuration should work. Any help is _very_ welcome :)
Thank you, Jeffrey.
----------------------------------------------------
Jeffrey D Fearn Esquire
Network Administrator
GWR Com Cor Australia
[EMAIL PROTECTED]
----------------------------------------------------
--
PLEASE read the Red Hat FAQ, Tips, Errata and the MAILING LIST ARCHIVES!
http://www.redhat.com/RedHat-FAQ /RedHat-Errata /RedHat-Tips /mailing-lists
To unsubscribe: mail [EMAIL PROTECTED] with
"unsubscribe" as the Subject.
