Maildelivery to Groupmembers of MS365-Groups in a Hybrid environnement not working as expected

GeorgOFAJ 0 Reputation points
2023-03-31T07:11:18.6366667+00:00

Hello,

We are using MS365 in a Hybrid environment:

  • local AD users are synced to Azure AD via AD Connect
  • local AD users have their personal mailboxes on local Exchange 2016

The users connect to Microsoft 365 with their AD identities in order to use Teams, Planner and other MS 365 applications.

Upon creation of a Team, a Microsoft365-Group is automatically created in Azure AD. Each of these Microsoft365-Groups get an e-mail address attributed automatically.

In the Group settings, I can chose whether or not mail send to the group-E-mail is automatically distributed to all group members. I enable this feature.

Scenario 1:

Now whenever I send a Mail (from inside or outside my organization) to the Group-E-Mail address the mail is forwarded by MS365 as individual mail via our mailgateway to the local exchange and distributed to the personal Mailboxes of all group members -> this is the expected behavior, and confirms that mailflow is working alright.

Scenario 2:

It seems to get less clear when it comes to automatic notifications from various Microsoft-Apps. Whenever I trigger an action in an application, let say Planner, a notification mail is send out to my personal address and the group-e-mail.

The mail is delivered to my own mailbox correctly and the header shows me that it has been equally addressed to the group-e-mail. However - contrary on the behavior in Scenario 1 - it is not forwarded by MS365 to the other group members personal mailboxes.

This is independent on notification settings of the Team or Planner, nor on the individual notification settings.

Group Members with their personal mailboxes in Exchange-Online can subscribe to the groupmailbox, but those who have their mailbox on the local exchange cannot.

It’s a pity that the notifications are not forwarded to the personal mailboxes to the users, but only e-mail that are manually addressed to the groupmailbox.

Can anyone explain me if this behavior is by design or if there is any configuration somewhere that I have overlooked?

Thanks,

Georg

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  1. Yuki Sun-MSFT 40,856 Reputation points
    2023-04-03T07:49:45.85+00:00

    Hi @GeorgOFAJ ，

    Can anyone explain me if this behavior is by design or if there is any configuration somewhere that I have overlooked?

    According to the document below, "on-premises users that are added to Microsoft 365 Group are already configured to receive group email and calendars in their Inbox, regardless of the related setting on the group."
    Configure Microsoft 365 Groups with on-premises Exchange hybrid
    User's image

    To the best of my knowledge, there are no other settings available to configure the way that on-premises users receive group mails. So seems to me that it's probably a by-design behavior.

    Given this, it's recommended to move all mailboxes to Microsoft 365 soon in order to get a fully-fledged Microsoft 365 Groups experience.

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