Setup:
Server 1 - 192.168.2.1 LAN IP
10.0.0.10 WANIP with a /24 asignment (not the actual IP address)
SME server - 192.168.2.13 LAN IP
10.0.0.11 WANIP assigned via server 1
Problem:
Both servers are running as an email server, both are directly accessible from the net. But when a user@domain1 on server1 tries to send to user@domain2 on SME, the connection can not be oppened.
I've traced it to a routing issue, but not sure how to fix it.
When an email is being sent to Domain2, it reverses to the SME server's /24 Routable IP address.
When I try to telnet to domain2 via port 25, it also times out. But when I use the LAN IP, it connects.
I've tried to get emails from domain1 to be redirected to domain2 LAN IP using IPTables, but this has failed.
Using the hosts file, I put domain2 with the LAN IP address in, and that allows me to telnet directly to Domain2 via the WAN IP. But the email is still resolving to the wan IP and timing out.
I've also tried the Additinal IP HowTo, but it does not work on SME 6.5. I don't want to upgrade to 7 until after september, when the students that use this server will be out on break.
Does anyone have any suggestions as to how I should go about resolving this issue?
Thanks