Hi there, I am working on the trusting relationship between 2 domains with Samba 3 PDC and W2K PDC. When I typed in the trust password on both machines, on my Samba 3, I was prompted for the success output but I've got the following error on verify the trust on my W2K PDC: ""Information from the primary domain controller for the domain cannot be obtained because: The RPC server is unavailable. Make sure that the PDC is operating properly and then try again"" And from my Samba, I've got the following error log: Oct 13 12:51:51 sambav3 smbd[2015]: [2003/10/13 12:51:51, 0] auth/auth_domain.c:connect_to_domain_password_server(115) Oct 13 12:51:51 sambav3 smbd[2015]: connect_to_domain_password_server: unable to setup the NETLOGON credentials to machine myW2kPDC. Error was : NT_STATUS_UNSUCCESSFUL. Oct 13 12:51:51 sambav3 smbd[2015]: [2003/10/13 12:51:51, 0] auth/auth_domain.c:domain_client_validate(167) Oct 13 12:51:51 sambav3 smbd[2015]: domain_client_validate: Domain password server not available. What's about? Any solution or the link of the solution is greatly appreciated THX Simon