Enable Hybrid Exchange Attributes In AD Connect

AD Connect Sync Exchange attributes

 

If you’re setting up a hybrid exchange environment with Office365 these are the steps required you need to change within your Azure AD Connect sync tool before you run the hybrid office365 wizard.  You need to make sure you have your onprem exchange AD attributes synced to exchange online.  These are the steps used i did for a client running Exchange 2016

 

Assumptions

 

  1. AD Connect is already syncing with Azure AD
  2. AD Connect was installed after you had Exchange installed and AD schemer extended as part of Exchange installation

 

Enable sync of exchange attributes to Exchange Online

 

As part of enabling hybrid exchange you will need to enable the synchronisation of the onprem exchange AD attributes to Office365

 

These are the steps to enable the sync of exchange attributes within AD Connect

 

Launch AD Connect tool and click configure

AD Connect customisation

 

Click customise synchronising options

 

AD Connect Setup

 

Enter a global Azure AD admin credentials

 

Sync AD to Azure AD

 

Leave these settings and click next (confirm your Active Directory Forest)

 

Hybrid exchange attributes AD Connect

 

Leave these settings and click next

 

AD Connect Domain and OU filtering

 

On this screen you want to select Exchange hybrid deployment, click next

 

AD Connect Sync Azure AD

 

Click configure

 

Select Exchange Attributes to sync to Azure AD

 

Now perform a full Import / Full synchronisation / Export to replicate the exchange attributes to Office365

 

Run the following powershell command to start this:

 

AD Connect full sync powershell

 

You should now see you’re onprem exchange mail enabled objects in Office365:

 

Login to your exchange online admin centerSelect recipients / Contacts

 

They are represented as contacts in exchange online as below.  Once you migrate a mailbox to exchange online, it will then show up under mailboxes

 

exchange admin

Andrew Fitzgerald

Cloud Solution Architect. Helping customers transform their business to the cloud. 20 years experience working in complex infrastructure environments and a Microsoft Certified Solutions Expert on everything Cloud

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