Exchange hybrid with existing Office 365 mailboxes

Miroslav Kmet 21

Hi,

what is the procedure for creating hybrid with existing Office 365 mailboxes. For example, if we have O365 with N users with mailboxes and a new Exchange on-prem and we want to have hybrid.

Yuki Sun-MSFT 41,046 Reputation points Microsoft Vendor

2023-03-24T06:27:09.2366667+00:00

Hi @Miroslav Kmet ,

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Thameur-BOURBITA 32,831 Reputation points

2023-03-20T17:09:56.56+00:00

Hi @Miroslav Kmet ,

You have to start by installing and configure Azure AD Connect in order to synchronise User account from on-premise AD to Azure AD.

I invite you to read the following link to get more details about how create and configure hybrid envirement for Exchange : How To Set Up A Hybrid Exchange Office 365 Environment

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Yuki Sun-MSFT 41,046 Reputation points Microsoft Vendor

2023-03-21T07:00:46.5733333+00:00

Hi @Miroslav Kmet ,

Agreed that you'll need to enable the Active Directory synchronization with your on-premises organization by deploying the Azure Active Directory Connect tool.

Below are some more documents for refrence:

Hybrid deployment prerequisites

Create a hybrid deployment with the Hybrid Configuration wizard

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Exchange hybrid with existing Office 365 mailboxes

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