Morning, my credit union recently switched to Office 365. We have recently noticed an issue with employees accessing their emails via their mobile devices. Only a certain group of employees are able to do pre Office 365 conversion. We have disabled Exchange Active Sync for my account on the Admin site. Yet I am still able to access Outlook via my phone. Any ideas? Thank you all.
The Outlook app for Android/iOS can use the REST api even when ActiveSync is disabled. Paul Cunningham has written a good article on this scenario and how to get around the issue on a per-user or organisational level.