How to create a Dynamic Distribution List on Microsoft 365 Admin Centre

1. Visit https://portal.office.com/ and login with admin credentials.

2. Navigate to Microsoft 365 Admin Centre.

3. On the Control Panel on left side, click View all Admin Centres and Navigate to Exchange Admin Centre.

4. On EAC, on the Control Panel on left side click Recipients>Groups>Dynamic Distribution list.

5. Select Dynamic Distribution List on the list of options and name the group allstaffs.

6. Assign an owner (use the admin account) and select Users with Exchange Mailboxes or all (as required).

7. Group email address should be allstaff@domain.com.au or as specified by the client. Your Dynamic Distribution list is created.

8. You need to specify who can send to that DL. Click that DL created and select Options>Delivery Management.

Sender options: Only allow messages from people inside my organization and select the delegate. (In this case it would be alit@allinit.com.au)

Note: Alit@allinit.com.au is an external email, hence it needs to be added as contacts on Exchange Admin Centre and the proceed with Step 8.