Microsoft did separate the Security and Compliance Center into two individual centers. Not only that,…
Create Office 365 resource mailbox in Exchange Hybrid
It’s good to through the Exchange Hybrid test plan checklist before you start to migrate any mailboxes to Exchange Online – Office 365. One of the items is to create an Office 365 resource mailbox in Exchange Hybrid configuration. In this article, we will look at the different options on how to create Office 365 resource mailbox in Exchange Hybrid.
Table of contents
Create Office 365 resource mailbox
There are two ways to create a resource mailbox in Exchange Hybrid:
- Exchange Admin Center
- Exchange Management Shell
Note: Good to know is that you don’t need to assign a license to a room mailbox or equipment mailbox.
Create Office 365 resource mailbox in Exchange Admin Center
Sign in to Exchange Admin Center (EAC) with admin privileges. This is on the Exchange on-premises server and NOT Office 365. Click recipients in the feature pane and click mailboxes in the tabs. Click the + icon. Select Office 365 mailbox to create a new mailbox in Office 365.
Fill in the information. Ensure that you select a verified domain UPN suffix and not a local suffix such as .local or .lan. Select Room mailbox for Mailbox type. Click Save.
Don’t forget to force sync Azure AD Connect or wait a maximum of 30 minutes before the sync is automatically run.
PS C:\> Start-ADSyncSyncCycle -PolicyType Delta
Click on the new room mailbox and click the edit icon in the toolbar.
Click email address in the menu. Verify that you see:
- smtp:@tenant.mail.onmicrosoft.com
- Remote routing address
Go back to the Exchange admin center and click in the top bar on Office 365. Sign in with your Microsoft 365 admin credentials. Go to recipients > resources. Click the Office 365 room mailbox and press the edit icon in the toolbar.
You will only see Office 365 mailboxes in Microsoft 365 Exchange admin center. The on-premises mailboxes are not shown on Microsoft’s cloud servers.
In the menu, click on email address. There is no remote routing address option in the cloud, and you will see two smtp onmicrosoft.com email addresses:
- smtp:@tenant.mail.onmicrosoft.com
- smtp:@tenant.onmicrosoft.com
In Active Directory Users and Computers, the AD-object shows up.
We did create an Office 365 resource mailbox directly from on-premises Exchange admin center in Exchange Hybrid configuration. In this example, it was a room mailbox.
Create Office 365 resource mailbox with Exchange Management Shell
Run Exchange Management Shell as administrator. Make use of the New-RemoteMailbox cmdlet. Run the command to create a resource mailbox in Office 365.
[PS] C:\>New-RemoteMailbox -Room -Name "Test RoomMailbox2" -Firstname "Test" -LastName "RoomMailbox2" -UserPrincipalName "Test.RoomMailbox2@exoip.com" -OnPremisesOrganizationalUnit "OU=Resources,OU=Company,DC=exoip,DC=local"
Wait for Azure Active Directory synchronization or force sync Azure AD connect with PowerShell.
PS C:\> Start-ADSyncSyncCycle -PolicyType Delta
The room mailbox shows up in Exchange admin center.
Click in the top bar on Office 365. Go to recipient > resources. Verify that you see the room mailbox.
Test room mailbox booking
We did create two Office 365 resource (room) mailboxes. Let’s test booking a room mailbox.
Sign in to Amanda’s Outlook, which is an on-premises mailbox. Click on New items > Meeting.
Fill in the user you want to send the invite to and include the test room mailbox that you created in the earlier step. Click Send.
The meeting request is automatically accepted because that is the default behavior for new room mailboxes.
Test GAL visibility in both organizations
It’s good to test the Global Address List (GAL) visibility in Exchange on-premises and Exchange Online (Office 365).
Exchange on-premises Global Address List visibility
From Amanda’s Outlook client, click on Address Book. Select the address book All Rooms. Verify that the Office 365 room mailboxes show up.
Office 365 Global Address List visibility
From Test Mailbox1 Outlook client, click on Address Book. Select the address book All Rooms. Verify that you see the Office 365 room mailboxes.
The next time, we will look at how to create distribution group in Exchange Hybrid.
Conclusion
In this article, you learned how to create an Office 365 resource mailbox in Exchange Hybrid configuration. There are a couple of options to create a room mailbox in Office 365. Choose the one that works best for you.
Did you enjoy this article? You may also like the course Exchange Hybrid. Don’t forget to follow us and share this article.
Add one more information, how to create room list and then conference rooms to be member of the roomlist.
Hi ,
How do we attach a workspace to a distribution group member in an Hybrid environment.