I have one Win2008r2 Domain Controller (DC) and one Win2003 DC. Both of these servers run dhcp and they each have a seperate scope where each server issues part of our ip addresses. That way if one dhcp server is not available or is down then the other server can respond. The Win2008r2 has been in place for about 18 months.
My problem is: ever since a power failure last week in which I had to shut down all of my servers and related equipment I had a problem with my 2008r2 DC but was not aware of it. The problem was is stopped giving out ip addresses and I could not remote into the server either. I had to access it via the Hyper-V manager. I know, I know it is not recommended that you run a DC as a VM. Believe me it works great as long as your DC comes up before the other servers. Anyway, I rebooted the 2008r2 DC and it appears that everything is back to normal. Howerver, I have an error in my event log that I have not seen before. The Event is ID 1056 and is copied below. I have never seen this before and all the information I am finding is related to Windows 2003. Is this something I need to be concerned with? thanks
The DHCP service has detected that it is running on a DC and has no credentials configured for use with Dynamic DNS registrations initiated by the DHCP service. This is not a recommended security configuration. Credentials for Dynamic DNS registrations may be configured using the command line "netsh dhcp server set dnscredentials" or via the DHCP Administrative tool