Forum Discussion
Enable AD Connect sync with existing Office 365 accounts and mailbox
Hi, I'm managing an Office 365 tenant with 60 users with E3 subscription. For the moment all users have a username with @mydomain.onmicrosoft.com domain and a mailbox associated. Now, I want ...
Hi Julien,
1. You NEED Exchange on-premises for recipient management. It is not supported to change for example alias and proxyaddresses attribute via Active Directory.
2. Only with Exchange 2016 CU10 you can create shared mailboxes directly in Exchange Online.
3. Your UPN should match your primary smtp address as best practices. If you can do this change, do it.
Best,
Dominik
Dominik Hoefling You don't need a full install of Exchange to manage a hybrid AD / O365 mail environment. You just need the Azure AD Connect software. It includes the PowerShell modules needed for AD Users and Computers to edit the necessary information.