While adding a new 2008 R2 DC the message displayed during my DNS and Global Catalog choices that there were 2 DNS servers in our Domain. However, that isn't the case. The new DC that I'm building actually re-building was previously a DNS server, however it was properly demoted and removed from the domain before re-build.
I ran a scan using WSPing Pro and it only shows 1 DNS server.
So is the Windows message and error or do I have a rogue DNS server? How do I verify?