Hi, I'm not sure if this is the right place to ask this, please point me somewhere more appropriate if this is the case! I am trying to authenticate users against an NT domain controller. I am using the perl Authen::Smb module. Unfortunately it doesn't seem to work! Digging a bit deeper, I find that 1) If I use Samba as a PDC, it works fine 2) I can log on to shares on the NT machine This suggests that there is some setting on the NT controller that is preventing me from using SMB authentication, but allowing me to log on to NT shares. I don't know anything at all about NT administration; could anybody tell me where the problem could be? Thanks, Saajan