Configuring Android for Exchange 2013
Previous email accounts
If you have configured your device with your email address before, you must first remove that account from the device.
If you have not previously configured your device for your email and are setting it up for the first time, please skip to the section below titled "Setting up a new account"
Click on the listed account you want to remove.
Enter Exchange Server Information
IT Policy Activation
From here, you will be prompted to activate your company IT policy. Tap Activate or you will not be able to sync mail.