Forum Discussion
Looking for a best practice for using Active Directory sync users to M365 without Exchange Server
Dear Exchange Team
I'm looking for a best practice for my organization about using both Active Directory and M365
We have a Domain Controller on-premise installed Azure AD Connector to sync all accounts on-premise to M365.
Besides, we have an Exchange Server 2013 installed Hybrid Configuration Wizard (HCW) to migrate all mailboxes from on-premise to Exchange Online. This is complete.
For now, I would like to decommission the Exchange 2013 completely. As current I have to maintain the Exchange Server with 1.5 TB its database, this is a waste of resource and it's a lot of effort to maintain both environments like that.
I'm still using Active Directory to synchronize users to M365 and then creating mailboxes for them in M365. However, after reading many articles on the subject, I still haven't found a way to create on-premises accounts for new employees, synchronize those accounts to M365, and then create mailboxes for them from Exchange Online.
Is there a solution for this case?
Thank in advanced!
- You can remove the on-premises Exchange server, but you will need to use PowerShell to manage all the mail-related attributes. The details are documented here, including details on if the scenario will work for your organisation: https://learn.microsoft.com/en-us/exchange/manage-hybrid-exchange-recipients-with-management-tools
I would like to know the mail flow for your currently configured hybrid.
The reason is that depending on your mail flow scenario,
you may decide whether to uninstall Exchange Server 2013 or not.- Hi Tae
My mail flow already routed to Exchane Online, I tried shut down the Exchange Online and the result when user was syncing to M365 from Active Directory it have an mailbox with domain ****@onmicrosoft.com instead of my organization's domain name. Because there are attributes are managed by Exchange On-Premise1. Is the account created in On-Premise Active Directory only for Exchange Server?
2. Does the account created in On-Premise Active Directory also use the user's PC as a domain environment?
- You can remove the on-premises Exchange server, but you will need to use PowerShell to manage all the mail-related attributes. The details are documented here, including details on if the scenario will work for your organisation: https://learn.microsoft.com/en-us/exchange/manage-hybrid-exchange-recipients-with-management-tools
