The following instructions step through the process of configuring your Office 365 Exchange Online account with Outlook 2011 and 2016 for Mac OS X.
*Note: If you have not previously opened Outlook you will be provided with a welcome screen. From here click Add Account, select Exchange, then skip to step 4.
From the Tools menu, select Accounts...
From the + drop-down menu, select Exchange.
In the User name field enter your CULoginName@colorado.edu, then enter your IdentiKey password in the Password field.
When completed, click Add account.
*Note: If prompted for a server address, enter outlook.office365.com, then click Add account again.
You will likely be presented with an autodiscover prompt. Check the Always use my response for this server, then click Allow.
Your account will be configured and begin synching.