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Create distribution group in Exchange hybrid

A hybrid environment is set up between Exchange on-premises and Office 365. This time you want to create a new distribution group. It’s also one of the tasks of the Exchange hybrid test plan checklist. How will that work? In this article, we will look at how to create distribution group in Exchange hybrid.

Information

In this article, we will:

  • Create a distribution group in Exchange hybrid
  • Test mail delivery to distribution group in both organizations

Create distribution group on-premises

Sign into 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 groups in the tabs.

We already have mail-enabled security groups. It means that we can use it as an email distribution list as well as security groups to assign permissions to resources. The group and the group members are synchronized with Azure AD Connect as part of directory synchronization solutions that is in place.

Click the + icon. Create a new Distribution group.

Create distribution group in Exchange hybrid exchange admin center

Add Exchange on-premises and Office 365 mailbox

Add the Exchange on-premises mailbox and Office 365 mailbox to the distribution group.

In our example, Amanda is an on-premises mailbox, and both Test Mailbox1 and Test Mailbox2 are Exchange Online (Office 365) mailboxes.

Read more: Create Office 365 mailbox in Exchange hybrid »

Create distribution group in Exchange hybrid new distribution group.

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

Verify distribution group in Microsoft 365 Exchange admin center

Sign in to Microsoft 365 Exchange admin center. Go to Recipients > Groups > Distribution list. Verify that the distribution group shows up in the Distribution list. Click on the distribution group.

Create distribution group in Exchange hybrid verify distribution group

Click Members and verify that you see the members.

Create distribution group in Exchange hybrid verify members

If you want to add new members or edit the distribution group, you need to do that from the on-premises environment.

You can only manage this group in your on-premises environment. Use Active Directory Users and Computers or Exchange Admin Center tools to edit or delete the group.

Test mail delivery to distribution group

We did create the distribution group in on-premises Exchange admin center. The distribution group and membership successfully synchronized to Office 365. Let’s test the delivery to the members when we send an email to the distribution group from both organizations.

Send email from Exchange on-premises to distribution group

Start Outlook and log in with the on-premises mailbox. In this case, it’s the user Amanda. Create a new message and click the To… button. Select All Distribution Lists from the dropdown menu. Doube-click the distribution group and click OK.

Create distribution group in Exchange hybrid select distribution group in Outlook

Click Options and enable Request a Delivery Receipt. Click Send.

Create distribution group in Exchange hybrid send email to distribution group with request delivery receipt

Everyone who is a group member will receive that message. The delivery receipt for the on-premises delivery arrived fast. After a short delay, the delivery receipt for the two test mailboxes in the cloud will arrive.

Create distribution group in Exchange hybrid message has been delivered

Send email from Office 365 to distribution group

Start Outlook and log in with an Office 365 mailbox. In this example, it’s the Test Mailbox1 user. Click on the message which you send in the previous step. Click Reply All.

Create distribution group in Exchange hybrid reply all

Remove Amanda from the To field. Only keep the distribution group. Click on the icon to show the Message Options dialog box.

Create distribution group in Exchange hybrid reply all

Enable Request a Delivery Receipt and click Close. Click Send to send the message.

Request delivery receipt for this message

The delivery receipt will start rolling in quickly.

Your message message has been delivered to the following recipients

The next time, we will look at how to create an Office 365 group in Exchange hybrid.

Conclusion

In this article, you learned how to create a distribution group in Exchange hybrid configuration. Create the distribution group in Exchange on-premises. Add the Exchange on-premises and Office 365 mailboxes members to the distribution group. After the synchronization occurs, test that the mail to the distribution group delivers to the recipients in both environments.

Did you enjoy this article? You may also like the course Exchange Hybrid. Don’t forget to follow us and share this article.

ALI TAJRAN

ALI TAJRAN

ALI TAJRAN is a passionate IT Architect, IT Consultant, and Microsoft Certified Trainer. He started Information Technology at a very young age, and his goal is to teach and inspire others. Read more »

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