[Samba] RPC Server is unavailable . . .

[Steve Ankeny]

Ubuntu 14.04, Samba 4.1.6

I'm having trouble connecting Windows clients to the domain.

"The following error occurred attempting to join the domain "smbdomain":

The RPC server is unavailable."

When you attempt to join the domain, it finds it by name immediately and 
asks for username/password, after which it gives the error above.  I 
haven't found documentation on the RPC Server in Samba.

Is that an entry in the 'smb.conf'?  I see text about allowing "domain 
logons" and use of the "SAMR RPC pipe"  I have the requisite entries in 
'smb.conf' for 'netlogon' share but not the calls to allow the scripts 
to run.


[netlogon]
     path = /var/lib/samba/sysvol/smbdomain.com/scripts
     read only = No

[sysvol]
     path = /var/lib/samba/sysvol
     read only = No

I don't have "add user script" or "add machine script" in the 
'smb.conf'  Is it as simple as that?

Any suggestions?  Thanks.