Platform: Windows Small Business Server 2003
Problem: Suddenly this morning after a reboot of domain controller no clients can access Outlook or the Internet.
It seems to be DNS related but I'm very confused.
The servers NIC is configured to a static IP.
The primary DNS server is the servers IP address.
In DNS, there are two forwarders to opendns.org's dns service.
At the server I cannot access any external website but I can access the Outlook Web Access page using its local address.
No clients can access or even ping the server address.
To troubleshoot the problem, on my client I added a secondary DNS server to match opendns.org's address (184.108.40.206). Once I did that I could access the web no problem on my computer.
On my computer if I do an "nslookup google.com" it times out trying to query my DC (primary dns) but then works fine after querying the secondary dns.
To test the server, I tried dumbing it down, I...
- disabled the DNS server service
- Changed my primary DNS server from itself to the opendns.org address
- did an ipconfg/flush dns
- disabled and enabled the local NIC
I figured that since the above settings worked on a client , it should work on server at least just to test DNS, but it still fails exactly the same way. The server itself doesnt seem capable of querying any external DNS servers. I tried a few different DNS servers- they all fail.
I've called Microsoft support, but Im hoping EE can save me before they call me back.
Right now we're dead in the water.