Event ID - 1203

Event Id1203
SourceDNS
DescriptionThe DNS server encountered a "forwarders" directive in with no forwarding addresses in file %1 at line %2. Although the DNS server will continue running it will not be able to forward unresolved queries to the forwarders. To correct the problem, in the DNS console select the server in the console tree, then from the Action menu, click Properties and click the Forwarders tab. Add IP addresses for forwarders.
Event InformationAccording to Microsoft :
Cause :
If you are using a boot file to boot the DNS server and plan to use forwarders to resolve queries outside your domain, the names and IP addresses of the forwarders must be defined in the boot file. If you are using DNS Manager to resolve queries outside your domain, the names and IP addresses of the forwarders must be defined in the DNS Server Properties dialog box.
Resolution :
Edit the boot file that contains the name and the IP addresses of the forwarders:
1. In Windows Explorer, go to the Systemroot\System32\Dns folder.
2. Double-click the boot file, and then select Notepad to open it.
3. Scroll down to the Forwarders command line.
4. Enter the IP addresses of the DNS servers that are used to resolve queries outside your domain. You can include more than one server on the line.
Reference LinksEvent ID 1203 from Source DNS

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