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  2. BlackBerry Enterprise Mobility Server 3.8
  3. BEMS Installation Guide
  4. Preinstallation and preupgrade requirements for on-premises BEMS
  5. Prerequisites: BlackBerry Push Notifications service

Prerequisites:
BlackBerry Push Notifications
 service

The
BlackBerry Push Notifications
 service requires that you set up a
Windows
 service account for
BEMS
 in support of your
Microsoft Exchange
 environment.
Microsoft Exchange Web Services
 (EWS) push notifications are sent (or pushed) by the server to a client-side web service. Push notifications are ideally suited for tightly coupled clients like
BlackBerry Work
 and other
BEMS
 supported apps to which the server has reliable access. When the
BlackBerry Push Notifications
 service is configured,
Microsoft Exchange Web Services
 events are sent.
If you deploy
BEMS
 in a mixed environment, where
BEMS
 and
Microsoft Exchange
 are not co-located, there are additional requirements and prerequisites which may apply. Consider the following scenarios:
Scenario
Tasks
Cloud-based
BEMS
 with on-premises
Microsoft Exchange
  1. You must expose
    Microsoft Exchange Web Services
     and Autodiscover from your on-premises
    Microsoft Exchange
     to the Internet on port 443.
  2. Both Basic Authentication and
    Windows
     authentication are supported for
    Microsoft Exchange Web Services
     and Autodiscover.
On-Premises
BEMS
 with Cloud-based Exchange
  1. You must expose
    Microsoft Exchange Web Services
     and autodiscover from cloud-based
    Microsoft Exchange
     to on-premises
    BEMS
     on port 443.
  2. BEMS
     supports Modern Authentication and
    Microsoft Graph
    .
On-premises
BEMS
 with on-premises and cloud-based
Microsoft Exchange
  1. You must expose
    Microsoft Exchange Web Services
     and autodiscover from cloud-based
    Microsoft Exchange
     to on-premises
    BEMS
     on port 443.
  2. BEMS
     supports the following:
    • On-premises
      Microsoft Exchange
      : Both Basic Authentication and
      Windows
       authentication are supported for Microsoft Exchange Web Services and Autodiscover.
    • Cloud-based
      Microsoft Exchange
      : Modern Authentication and
      Microsoft Graph
      .
  3. The BEMSAdmin account must have impersonation rights on both the on-premises and
    Microsoft 365
    Microsoft Exchange
     systems. For more information, see Grant application impersonation permission to the service account.
For more information on configuring
Microsoft Exchange Web Services
 and Autodiscover for external access, see the following articles: