I'm having a problem with our DNS servers (NW6.0 SP5) not updating in a
reasonable time period from the upsteam servers.

Our upstream servers have changes made to records and our dns servers
don't get the changes till over 24 hours later. We do have some
Windows 2003 DNS servers that seem to get the updates within 30 minutes
of ancy changes being made.

Is there a way to force the server to retrieve and refresh its records?