[Samba] DFS root only works for more recent Windows clients

[Bruce Richardson]

I've been testing DFS roots and I'm finding that while Vista and 2008
Server clients can connect with no problems, Windows XP Pro and 2003
Server clients fail.  This seems like it's the wrong way round - Samba
usually has more difficulties with recent Windows versions than older
ones - but I can only assume that there's some registry/policy change
between the versions.  If anybody has seen similar issues or has an idea
of the likely cause, I'd be very glad of the help.

Using the Samba3x packages on Centos, so it's Samba 3.5.4.  Very simple
config:

#======================= Global Settings =====================================

[global]

        workgroup = OFFICE
        server string = 

# ------------------------- Domain Members Options --------------------------

        security = domain
        passdb backend = tdbsam
        password server = *

# -------------------------- Share Default Options ---------------------------

        writeable = no
        browseable = yes
        printable = no
        write list = @domadmins,
        valid users = @domadmins, @domusers,

# ---------------------------- Share Definitions -----------------------------

[files]
        path = /dfsroot
        msdfs root = yes


-- 
Bruce

Bitterly it mathinketh me, that I spent mine wholle lyf in the lists
against the ignorant.  -- Roger Bacon, "Doctor Mirabilis"