I have a Windows Server 2008 AD Integrated DNS zone across two domain controllers, I have added various CNAMEs pointing to our Build and Dev Web servers to support or continuous integration process.
These CNAME, and the A record for a server vanish over night, not all of them just a small selection usually between 5 and 7 days after they were created.
- No one else in the company has touched the config (only 2 of us have access, I have primary responsibility for managing DNS).
- DNS Scavenging is disabled on both DNS servers.
- There are no error messages or warnings in the Event Logs.
Any ideas, suggestions or solutions appreciated.