UPDATE (2022-06-23 22:25 EDT): We believe the issue has been solved. Please notify the helpdesk if you encounter any issues.

UPDATE (2022-06-23 15:32 EDT): The web access portal will work with Mac systems as long as Firefox is used as the browser (not Safari).

We are aware of an issue with those using either mobile devices, or Mac systems, to access their mail on Exchange. Microsoft are working on the problem; https://portal.microsoft.com/servicestatus currently says “Users may be unable to sync external accounts with Outlook Mobile or Outlook for Mac“.

Unix Mail server users (Thunderbird client etc) are not impacted.