Web site not resolving within network

We have a company network and are having trouble access the site gis.Utah.gov from within the network.

Here are the steps that I have taken for troubleshooting:

1. ran nslookup and get the correct IP provided from inside the network
2. Set up the internal DNS server with no forwarders (only using root hints)
3. From within IE ran the network capture and came up with the following from within the network:
4. gis(dot)Utah(dot)gov HTTP  (Aborted)  0 B < 1 ms refresh 0 0 0 0 0 42026
5. I have run the same outside the company and it resolves OK.

We have tried this with IE, Firefox and Chrome with no luck.

If anyone has any input regarding what else I could look at to resolve this issue, I would be grateful.