OK, I'm trying to get Samba working with LDAP. And I have it... sort of. I have a Samba server TESTBOX, and I can authenticate to it just fine. It seems taht if I change the "netbios name" (which I was doing to simulate "connecting from some other samba server in our network"), I get: $ smbclient //FS01/files 'foo' -U dballing -I testbox.byramhealthcare.com -N -d 4 added interface ip=10.15.49.49 bcast=10.15.49.255 nmask=255.255.255.0 Client started (version 3.0.0beta1-1 for Debian). Connecting to 10.15.49.46 at port 445 session request ok Serverzone is 14400 Doing spnego session setup (blob length=58) got OID=1 3 6 1 4 1 311 2 2 10 got principal=NONE session setup failed: NT_STATUS_INTERNAL_DB_ERROR ... if I set the "netbios name" back to "TESTBOX", it works just fine: $ smbclient //TESTBOX/files 'foo' -U dballing -I testbox.byramhealthcare.com -N -d 4 added interface ip=10.15.49.49 bcast=10.15.49.255 nmask=255.255.255.0 Client started (version 3.0.0beta1-1 for Debian). Connecting to 10.15.49.46 at port 445 session request ok Serverzone is 14400 Doing spnego session setup (blob length=58) got OID=1 3 6 1 4 1 311 2 2 10 got principal=NONE OS=[Unix] Server=[Samba 3.0.0beta2-1 for Debian] session setup ok tconx ok smb: \> ... is the NETBIOS name stored in the LDAP password info in such a way that it would be impossible to connect from two different netbios hosts? This seems like it would be counterproductive as a "centralized authentication database" for more than one server. Am I doing something wrong?