OS X Yosemite :: Can't Add Exchange Server Mail Account

I am trying to add my Exchange account to the INTERNET ACCOUNTS so that my Exchange contacts can be accessed. Every time I try to add the Exchange account to Internet Accounts either through Mail app or via System Preferences (same thing), it keeps hanging once I add in the account information. I was able to add the account in the past (just last month) but now I can not get passed the set up process.how to add the account successfully. I am using Mac OS X 10.10.1

Info:
MacBook Pro (Retina, 13-inch, Late 2013)