Hello I was wondering if I have a problem with my AD/DNS servers. I used to use the nslookup command to figure out ip to hostnames but now it's not working. I'm not sure when it stopped. I have two servers that are both DCs and DNS servers. When I open the DNS consoles I see the DNS entries for ip addresses in my domain. when I type nslookup I get logged into my primary DNS server. When I go to look up an ip address it always comes back saying that it can't find the address followed by a message saying non-existent domain. any ideas where to start looking to resolve this?