I have 3 Windows domains, a parent (company.com) and 2 children
(west.company.com and east.company.com).

With squid 2.5 Stable 5, I can use the basic scheme with
multi-domain-NTLM helper to authenticate the users of the 2 children

With the ntlm scheme, I must use the winbind helper (Samba 3.X) but the
FAQ "http://www.squid-cache.org/Doc/FAQ/FAQ-23.html#ss23.5 " refers only
to one domain (workgroup = mydomain, password server = myPDC).

How can I authenticate a user with the ntlm scheme in a multi-domain
configuration ?