[Samba] Sample idmap configuration block for Samba 3.4.X as a PDC ?

[Patrick Rynhart]

idmap has undergone a number of changes in the syntax etc. as is evident
from the following talk:

http://samba.org/~obnox/presentations/sambaXP-2009/sambaxp-2009-talk-obnox-slides-paper.pdf

I'm wanting to get a minimal example of idmap for the case where Samba
is a PDC but also in a trust with a Windows DC "SANDBOX".  Are the
following "idmap" parameters correct and sufficient to be using with
Samba 3.4.X ?

idmap backend = ldap:ldap://127.0.0.1
idmap uid = 50000-60000
idmap gid = 50000-60000
idmap alloc backend = ldap
idmap alloc config : ldap_url = ldap://127.0.0.1/
idmap alloc config : ldap_base_dn = ou=idmap,dc=seat,dc=massey,dc=ac,dc=nz
idmap alloc config : ldap_user_dn = cn=admin,dc=seat,dc=massey,dc=ac,dc=nz

idmap config SANDBOX : backend = ldap
idmap config SANDBOX : range = 50000-59999
idmap config SANDBOX : ldap_url = ldap://127.0.0.1/
idmap config SANDBOX : ldap_base_dn = ou=idmap,dc=seat,dc=massey,dc=ac,dc=nz
idmap config SANDBOX : ldap_user_dn = cn=admin,dc=seat,dc=massey,dc=ac,dc=nz
idmap config SANDBOX : ldap_alloc_url = ldap://127.0.0.1/
idmap config SANDBOX : ldap_alloc_base_dn =
ou=idmap,dc=seat,dc=massey,dc=ac,dc=nz