Hi, PDC: WinNT4. SMBD: 3.0.10 I keep hitting problems with a samba server maintaining it membership of a WinNT PDC. I added the server via server manager then use net rpc to join the domain from the samba server. All was well for a week but today, connections were refused with a "No logon server available". The event viewer had the error: The session setup for from computer ... failed to authenticate. The name of the computer referenced in the security database was .... The following error occurred: Access denied. I think this is due to the password change that takes place every seven days but I do not understand why the passwords and not being changed correctly. I have disabled the firewall and turned selinux to permissive so i can't see any reason why the secure channel wouldn't work. There is an article at MS that appears relevant but doesn't help from a *nix box. http://support.microsoft.com/kb/150518 At the moment I am having to remove the server from the domain, add it again and then net rpc join the domain again. I had to do it twice today for some reason. Can anyone advice me on a solution? Thanx, Dp