Quick reference:
Settings -> Integrations -> Exchange settings
Introduction
In Workspace 365, it is possible to configure your On-Premise Exchange when having oAuth2 as Single Sign-On method configured. Therefore we use integration credentials.
Configuration
As an admin, go to:
Workspace admin settings.
Go to Integrations and select Exchange settings.
Check the checkbox Enable Exchange.
As Exchange server type, choose On-premises.
Check the checkbox Use integration credentials for Exchange connectivity.
Make sure the user fills in his/her Integration credentials under the User settings with the right syntax (e.g. username "[email protected]"), and remember to check the checkbox for Exchange connectivity.
The user is now connected to the Exchange and has access to their mailbox.