Configure and validate modern authentication

Complete the following tasks to configure modern authentication and validate that is working correctly.

Item	Description
	Because basic authentication must work during the migration process, make sure that basic authentication is working for users with mailboxes on Outlook Online. It can be disabled later.
	Make sure that your environment meets all of the prerequisites to enable modern authentication.
	Perform the following tasks using test accounts: Validate modern authentication functionality using Microsoft Exchange Online test accounts. It is recommended that you create test accounts on your on-premises Microsoft Exchange server and mimic the migration with these accounts to Microsoft Exchange Online . Make sure that each required BlackBerry Dynamics app can authenticate using Microsoft Exchange Online test accounts. Make sure that BEMS Push Notifications are functioning for Microsoft Exchange Online test accounts.
	Validate that autodiscover is configured properly for Hybrid Exchange environments according to Microsoft’s recommendations. For more information, see Office 365 Exchange Hybrid Deployments Busting the Autodiscover Myth.