IOS Notifications don't work


We have the Sophos Mobile Controll with the Sophos Mobile Mail running in our company.

Settings are: Privat Device and Container Mail solution, Users Added with Active Directory.


Everthing is working but not the notifications for IOS.

-I already did these things:

-Push notifications are activiatet on IOS under Apps -> Permissions



But here we added EWS only for two test IOS Users and we did not activated the Basic Authtification.

Did I forget something? Or does it only work when I also activate the Basic Authtification in the IIS?


Thanks for your help!