A. If your NT 4.0 server can't resolve Fully Qualified Domain Names (FQDNs) and each attempt results in the following messages in the System log, your cache.dns file is probably corrupt:

 Event ID: 453
 DNS Server sendto () function failed. The data is in error.
 Event ID: 7053
 DNS_EVENT_SENDTO_CALL_FAILED DNS Server sendto() function failed.
 The data is the error.

To resolve these errors, replace the cache.dns file with the template version that NT copies to your computer during OS installation by performing the following steps:

  1. Click Start, Run, and type  cmd.exe to open a command prompt.
  2. Type  C:\> net stop DNS to stop the DNS service.
  3. Type  C:\> copy %systemroot%\system32\dns\samples\cache.dns %systemroot%\system32\dns to replace the current cache.dns with the template version.
  4. Type  C:\> net start DNS to start the DNS service.
  5. Type  C:\> exit to exit the command window.