The 2nd NIC is setup with an specific IP address and a registered subdomain associated (e.g., smtp.companyA.com) for outgoing/incoming SMTP email. Since some of the major SMTP servers need reverse IP lookup, we need to make the 2nd NICs IP known to outside world, restricting all email traffic to...
We have a Windows 2003 server with 2 NICs. The first one is setup for internal access behind firewall/rotuer with IP address 192.168.1.x with gateway 192.168.1.1. This IP is reachable from inside the network.
The second NIC is setup for access from outside with a static IP address 71.251.x.y...
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