Windows 2003 member server had DNS error due to legacy IP of replicated server that had been isolated on a disconnected subnet for testing. That replicated machine was physically removed before site-to-site connection restored from subnet to LAN. Evdently, remote DNS entry for remote subnet IP came over.
I was able to update the DNS info to LAN subnet and am able ping the server by name and IP in LAN and WAN. However, I cannot logon either as a domain user or the local Administrator because computer account not found and/or target name incorrect. I tried a remote forced shutdown but access is denied. Tried RDP and VNC same results. Can see server in Windows Explorer but cannot open as target name is not correct. Have started in Safe Mode as Last Known Good and Safe Mode with Networking with same results. Removed from DNS and AD Computers then re-added but AD does not show DNS name in Properties. Still pinging OK.
What else can I do to recover this production SQL/Data Dell Power Edge R900 Windows 2003 Std. R2?