Error in O365 Sync log:
As domain is not selected for provisioning, account will not be synchronized. User email address = xxi@xxx.onmicrosoft.com
The onmicrosoft.com SMTP address is set as the Primary SMTP in Exchange Online.
Add the onmicrosoft.com domain to the tenant in Arctera Unified Platform.
Exchange Online (O365) Sync does not enable or disable accounts when it should.