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
    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.