HOW TO: Configure Office 365 Exchange Web Services as an email provider in the Active Roles mail configuration (4341143)

1. Log into the Active Roles Console as an Active Roles Administrator
2. Navigate to Configuration | Server Configuration | Mail Configuration and create a new mail configuration or modify the Default Mail Settings
3. On the Mail Setup tab, change the Settings for: dropdown box and choose Exchange Web Services
4. Set the Exchange Web Services address: to this value:

https://outlook.office365.com/EWS/Exchange.asmx

5. Set the Active Roles' mailbox credentials: username and password to an account which in UPN format and which has an Exchange Online License assigned.

NOTES: 

Please see this site for extending or re-enabling Remote PowerShell (RPS) for Exchange Online .