If someone could help me. I've done a few searches on the board and have found some information but not enough.
I have ASL setup with three interfaces. eth0 is my internal network (CITIES), 10.1.1.0 net maks 255.255.255.0. eth1 is my ISP which I have named WAN_141. My ISP gave me four public IPs AAA.BBB.CCC.138 to 141 net mask 255.255.255.0. I originally aliased all four IPs to eth1. Finally, eth2 is my DMZ composed of one host which is my webserver 10.1.2.100 net mask 255.255.255.255. I also set it up as a network object to DNAT too.
The intial setup was incredibly fast. In less than 45 mintues I was ASL installed and surfing the net.
Unfortunately, I am on my 8th hour on trying to get my webserver and mail server working properly. After figuring out DNAT 10.1.2.100 -> eth1, I can access my webserver but I can't connect via IMAP to the Exchange side of the server. Also, SMTP doesn't appear to be working since emails from my Yahoo account to my Exchange server are not being received. I tried SMTP, etc. but just can't get it to work.
Finally, in an act of desperation, I bought a hub and moved my webserver back on my ISP connection using its original IP of AAA.BBB.CCC.138. I can ping it from other ISPs, but I can't see it from my CITIES network. I'm fairly certain it's a routing issue, but I lack the knowledge of correcting it.
Once again, an advanced thank you to all that have helped.
This thread was automatically locked due to age.