I'm getting numerous Event ID 5504 (every couple of minutes) and an a couple Event ID 9999.
It's on an Exchange 2000 server - DC - service pack 4. Forwarders are enabled with my ISP DNS servers.
Email and internet is working fine. Just hundreds of these warnings.
Event Type: Warning
Event Source: DNS
Event Category: None
Event ID: 5504
Description: The DNS server encountered an invalid domain name in a packet from IP_Address.
The packet is rejected.
The IP address in all these warnings are the same - IP address of ISP DNS server (ATT)
I tried using different DNS servers in the forwarders, but same problem.
TCP/IP settings are pointing to itself on the server for DNS.
I've tried many of the solutions from the search here, but haven't found a solution.
Please help. Thanks.