if sme 8b work a Windows 2003 Server as an Active Directory server ?
I don't know.. you'd better check into bugzilla.. I know there is a project to move to ldap auth (and so to AD compatibility)
(l chek least 6 characters password is work )
if SME is a domain member auth then it is not responsable for passwords and auth.. so, if AD supports 6 digit passwords, it will work.
anyway, SME8 still needs at least 7 digit password
Ciao
Stefano