I am trying to help a friend of mine work on a non-profit's W2K3 DC. Attempting to load AVG to clients via AD, however load fails. Client reports inability to authenticate against DC. Upon reviewing DC, AD is loaded and running as best as can be told, users seem to be authenticating against it as server also is used as file server for office and clients able to access authoritatively. Here is the catch, no sign of DNS running on this server at all. Have checked under:
1. Services - only client service is displayed and running
2. Server Manager - Only Domain Controller and File Server are displayed as rolls
3. Event Viewer - no DNS log
4. Add/Remove Components : DNS not checked or otherwise indicated as installed
First, how is this possible - has anyone else seen similar? Second, how to bring DNS online, potential concerns, mitigations and expectations?