Services for NFS won't connect to 2003R2 user name mapping
I've setup an instance of 2003R2 just to use the user name mapping for NFS, this is pulling data from an NIS server running on Debian and I can see the simple user mappings are generated successfully.
The actual files I need to share via NFS with authentication are on a 2008R2 server (and it's a lot of data so I can't easily move it somewhere else). I installed the Service for NFS feature and set it up to use the 2003R2 server for user name maps but it logs this error every 30 seconds:
Event ID 1005 — NFS User Name Mapping Connection
I've turned the firewalls off on both servers, and tried using the hostname and FQDN of the 2003R2 server but I still get the error.
Any ideas what would be stopping this from working?