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JakeRhodes's avatar
JakeRhodes
Copper Contributor
Oct 20, 2022

Receiving external meetings and messages with Outlook Group

Hello all - can somebody please help me understand if https://support.microsoft.com/en-us/office/get-started-with-microsoft-365-groups-in-outlook-b86c141b-39cf-49d9-a4db-124c3d786204#ID0EBJ=Plan_Events are able to receive email messages or meeting invites from companies who have a different instance of Microsoft? For example, if I am an IBM employee and I forward an email from a Samsung employee to my IBM-only Outlook Group comprised of IBM employees, the email does not go through. Can somebody please explain why this is happening and offer a workaround? Thank you!

3 Replies

  • Office 365 Groups (and "traditional" distribution groups for that matter), do not accept external messages by default. You can configure this via the admin center ("Allow external senders to email this group") or PowerShell:

    Set-UnifiedGroup blabla -RequireSenderAuthenticationEnabled $false
      • VasilMichev's avatar
        VasilMichev
        MVP
        Actually, let's do it the easy way - I forgot you can toggle this from within Outlook/OWA too. Simply open the Group settings and toggle the "Let people outside of the organization email the group" checkbox therein.

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