Go to settings
Tap on Mail, contacts, Calendars
Tap on Add Account
Tap on Exchange
Enter your email address, password and what you want the mailbox to be called i.e. Work
Your iOS device will now try to locate your Exchange Server. If necessary, you will need to enter your front-end Exchange Server’s complete address in the ‘Server’ field which is cas.cloudplatform1.com for Hosted exchange or outlook.office365.com for office 365
Upon completion you will be given the option to choose which types of data to sync with your Exchange account.
Last Update: June 5, 2015