Its an interesting alert as all my devices should be using my DC for DNS which then forwards the request out to OpenDNS.
However, all my android devices are making a direct connection to Google's DNS servers. Not best pleased they seem to be bypassing my DHCP scope settings.
As such I've actually put a block in to Google DNS from inside my network. Hope this won't affect the devices but not best pleased this is happening. I'm more annoyed at google than I was at getting the alerts!
Odd how an issue like this can identify things you're not expecting!
