Microsoft Outlook 2021

On your Mac, open the „Microsoft Outlook“ app and click „Tools“ > „Accounts…„ in the menu bar:

Select „Add Email Account“:

Enter your E-Mail address and click on „Continue“:

Enter your username as follows „gwdg\username“ under „DOMAIN\username or Email Address“ and then click „Add Account“:

Your account is now functional and ready for use:

Take another look at your account details to double check: