This option specifies the location of a mapping file designed to translate Windows NT local group names to Unix group names. Local group names include those such as Administrator and Users. The file should reside on the Samba server. For example:
/usr/local/samba/private/localgroup.mapping
The file has a simple format:
UnixGroup
= [BUILTIN\]
NTGroup
An example entry is:
root = BUILTIN\Administrators
This option will work with Windows NT clients only. For more information, see Eric Pearce's
Windows NT in a Nutshell (O'Reilly).