Hi I am trying to join the CIFS server to the domain and it keeps failing. 

For domain I just have our domain name not a specific Domain Controller; for instance I have --> Company.com

For the OU by default it is Computers: EMC Celerra , I tried using this as well as deleting the computers part.  There is already an OU called EMC Celerra in our AD environment.  I have schema admin permissions to AD and I plug those in still doesnt work.

What could I be doing wrong fairly new to this.  I am using Unisphere to do the creation.