10.6 Server Authentication with Lesser Clients (10.5 & 10.4)

I am getting a test environment setup for a future transition
from Netware to Workgroup manager. Our 10.6 server is the OD Master
and also configured to give access to our AD structure for teacher and
staff home mappings/logins. Students and computer objects will be created and
managed by workgroup manager and home folders will be mapped to the 10.6
server.

I am hitting roadblocks when managing 10.5 and 10.4 clients.
Everything on a 10.6 client works fine. I have setup three test users with
home directories mapping back to our 10.6 server. I setup groups, presets,
and share points and everything is working fine on 10.6. Everything I set up works
beautifully in 10.6. However on previous mac OS’s I am having these two main
problems.

1. 10.5 clients receive all computer policies. They show Network Accounts
available at the login window and act like they are logging in. The
computer moves away from the login window, goes to a blue screen like its
logging in then snaps right back to the login window. The strange thing is
that the AFP logs under Server Admin show the user account is is connected
and the status is “disabled/asleep” even though the computer has never
logged in. However, any AD accounts can log in fine.

2. 10.4 clients will not receive computer policies after binding to the
server. Computers show no Network Accounts available. Local user accounts
can login and the test accounts in workgroup manager that I have created
can connect to server and get their home folders. They will not login
though from the login window. I have googled to no avail.

3. I haven’t gotten a chance to work with a 10.3 machine yet, but for some
reason I have an idea that they may not want to be cooperative either.

Thanks for any light you can shed on these problems.