Having trouble joining a domain

[danldo]

I have setup a new Windows SBS 2011 standard.
When I try to join the domain with a client computer running windows 7 pro I get this error message: Your computer could not be joined to the domain because the following error has occurred:
An attempt to resolve the DNS name of a domain controller in the domain being joined has failed. Please verify this client is configured to reach a DNS server that can resolve DNS names in the target domain. For information about network troubleshooting, see windows Help.
I can ping the domain server by IP address, but not domain name.

[jdabbs]

DNS problem. Your options:

1) Fix DNS on your server. Change the Windows 7 PC's DNS server to just the SBS server. If it doesn't work, you didn't fix DNS on your server.
2) Fire up wireshark on the Windows 7 PC. Attempt to join the domain, and note what DNS entries are unsuccessfully resolved. Edit your Win7 PC hosts file to have these domains point to the server IP. Attempt to join the domain again. Do this about 3-4 times and you should be good.