Many events for ID 14554 appearing in System event log

I have two 2008 R2 domain controllers and one new 2012 R2 server I just promoted to DC a few days ago. One of the 2K8R2 servers holds all the FSMO roles.   The new 2K12R2 DC is also an additional namespace server for domain-based namespace.  The DFS seems to be working fine, but about every 20 minutes the following 14554 event for 'DfsSvr' is logged:

The DFS Namespaces service has successfully initialized the shared folder that hosts the namespace root. Shared folder: ourDFSnamespace

This event does not appear on either of the two 2K8R2 DCs.