Red Hat Knowledgebase

To remove a samba server from a domain do the following:

1. Stop samba: service smb stop
   
2. Remove the secrets.tdb file: rm -rf /etc/samba/secrets.tdb
   
3. On a Domain Controller remove the machine name from the list of member servers. In Active Directory this will be in the computers section of your directory in Active Directory Users and Computers. In WinNT Domains this will be in Server Manager.

Note: The netbios name for the samba server may continue to display in network neighborhood for some time until WINS updates.