Event ID 5509 — DNS Server Message Processing
Applies To: Windows Server 2008 R2
These events represent problems processing data received by the DNS server that may or may not have a negative effect on server functionality.
|Product:||Windows Operating System|
|Message:||The DNS server encountered an invalid DNS update message from %1. The packet was rejected. The event data contains the DNS packet.|
This is a normal condition. No further action is required.