Domain authentication not working for hosts in other subnets

Hi,

I was unable to get domain authentication working for any host that does not reside in the same subnet with EventLog Analyzer server. It fails 'Verify Login' test with 'The RPC server is unavailable' error message. If does however report 'Access is denied ' if I attempt to enter incorrect password for the account in question. The domain account I am using is a member of Domain Admins group and has Administrator privileges for all hosts.

However, I can authenticate and connect fine if I use local user account (member of local 'Administrators' group) from the target hosts instead. I am not blocking any traffic between two subnets and I was able to confirm that all traffic between management server and target servers (including RPC traffic) is reaching the destination.

This only affects servers in any other subnet. I was able to add all servers from the same subnet that management server resides in, using the same domain account.

Any suggestions?

Senad