[Samba] Failed to join domain: failed to lookup DC info for domain '<EXAMPLE.COM>' over rpc: The object name is not found.

[Nico Speelman]

>You say 'My domain controller and client are running Debian testing with 
>samba 4.4.3'

>This sort of suggests you only have one DC, yet you have posted two DC 
>smb.conf files, can we sort this out before going further. Do you have 
>two DCs and are trying to join a client, or do you only have one DC and 
>are trying to join another DC?

>Rowland
Excuse me. I meant to say domain controllers. The client smb.conf is posted below:
[global]
        security = ADS
        workgroup = <EXAMPLE>
        realm = <example.com>
        log file = /var/log/samba/%m.log
        kerberos method = secrets and keytab
        client signing = yes
        client use spnego = yes