I have a Domain with 1 DC (also the only DNS server), 5 member servers and approx 30 workstations.
Mix of windows 2008 R2 enterprise, Win 7 pro and Win 7 Ultimate.
At random points I get a "Bad IP". I can not Ping between the device and the DC or log onto it.
I can not ping or connect to the DC until the IP address is changed to one that is free.
After a while, about a day or so the "Bad IP" become OK again.
Whilst the IP is "bad" any device with this IP address can not connect to the DC.
All the servers and workstations have static IP addresses.
Q, How can I see if the DNS is at fault. I ask this due to, the reverse is not updating or creating some entries.