At my university LIU they recently released a new service(new to the university) to have Emails for the university check
this for more details.
the Email is like this:
ID@students.liu.edu.lb
Password:LIU-number-UNI-3 numbers
We log in using windows live but i havent tried the massenger yet, it seems that Mr. Murad paid a lot to microsoft for this. If any knows more about this feel free to post.