I have a domain called bigroad. Our DNS name is litttletown.ac.uk, the full AD domain name is bigroad.littletown.ac.uk. users email addresses are @littletown.ac.uk.
I have 2 options when setting the user principal name
as per diagram, as yet I am to discover what the repercussions of choosing one over the other might be, can anyone assist in explaining what the difference is and what may be affected by which choice??