Event ID - 7063

Event Id7063
SourceDNS
DescriptionThe DNS server is configured to forward to a non-recursive DNS server at IP_Address.
Event InformationCAUSE: Certain queries to the DNS server (like a reverse lookup) result in a response that contains a damaged data section, and this can occur when the data in the packet uses compression, poor internet connection, internet connection is saturated or not working properly. The damaged data packet causes the buffer to be overrun, which causes the DNS service to generate an access violation error message and hang.
Another reason may be an invalid character in Domain name, DNS name which contains characters other than "a-z", "A-Z", "0-9", "-", ".". Some of the DNS servers may not enforce RFC 952 and query with  invalid name from these servers may reached to other DNS servers for processing, and will generates this event. To avoid such situations, Microsoft recommend to disable forwarders

RESOLUTION: Obtain the latest service pack for Windows 2000 may be resolve this issue.

Refer following MS article for more information.
Reference LinksEvent 7063 is recorded in the DNS log of Event Viewer in Windows 2000 Server

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