The Microsoft Outlook application for iOS and Android devices is not a supported or allowed method of accessing your Fairfield Exchange Email.
If you attempt to setup your @fairfield.edu Exchange email on this application, it will not succeed.
After attempting to set it up, you will receive an email to your @fairfield.edu Exchange email account informing you that the application was blocked. See below.
Information Technology Services recommends and supports that your Exchange email be set up natively on your iOS or Android Device.
Instructions on the proper procedure can be found here:
iOS: Add @fairfield.edu Exchange Email on iOS and Android Devices