DNS Problems with second NIC

[ngagne]

I've got a W2K server in my office that is having some DNS issues. I added a second network card, which is assigned a 192.168.1.xxx address. The first card is assigned a 192.9.200.xxx address. The cards are connected to different physical segments of the network. When the second card is enabled, we have DNS resolution problems with Exchange server - nothing external will resolve. On the first card, in TCP/IP config the DNS addresses assigned are those of our external DNS servers.

How can I resolve this problem? The second card does not need to resolve addresses external to our network, but the first one does. I'm not that familiar with DNS...

 

[Seaspray0]

From looking at the addresses, it sounds like it may be a routing problem and not DNS. I see two subnets here. Are you giving your local clients option 3 in DHCP to use your server as the default gateway and have you configured Remote Routing and Access or IP Forwarding to route through the server to your second NIC? Does the second NIC have a default gateway so it knows where to send the packets from there to say... the internet?

 

[ngagne]

The second network card is being used only to isolate traffic to a NAS device attached to the server for backup purposes. It does not need internet access, nor do other PCs on the main network (192.9 range) need to access the device.