The DNS server has completed a scavenging cycle but no nodes were visited. Possible causes of this condition include:
1) No zones are configured for scavenging by this server.
2) A scavenging cycle was performed within the last %1 minutes.
3) An error occurred during scavenging.
The next scavenging cycle is scheduled to run in %2 hours.
The event data will contain the error code if there was an error during the scavenging cycle.