[Samba] Cannot access/write to shares

[Adam Nielsen]

>        write list = @"domain users", "@domain users", "@domain admins",

I don't know the exact syntax, but have you tried other variations?
@DOMAIN\Domain Users is probably the main one, as this is how you have
to specify groups if you use winbindd (e.g. chgrp 'MYDOMAIN\My Group'
myfile)

Cheers,
Adam.