General :: Ssh With Domain Users On RHEL And MSAD 2003

I need to configure LDAP and connect it to Microsoft Active Directory 2003 SP2 to manage my RHEL 5.5 with Microsoft windows Domain

At this point I'm able to query MSAD (getent passwd/group lists all the users/groups from Domain as well as local)

Also Kerberos authentication is working (kinit user is working and klist are returning expected results)

Now my problem is that I cannot ssh into the RHEL box with any of the Domain Users even though I can see those account in getent results.

My first question is if everything is ok with my system-auth configuration file (I'm not sure if all is needed and in right order):

auth required pam_env.so
auth required pam_tally.so deny=5
auth sufficient pam_unix.so nullok try_first_pass

[Code]....

How to add Linux server computer account to MSAD Computers CN without using SAMBA ?? From what I read kadmin should do it but not sure how to do it