When AAD, EXO and MS Teams creating a mess

I’m dealing with these issues already for a long time. But meanwhile, after a couple of support cases, the fog seems to lifting.

When you don’t have the following setup, you can stop reading:

  • create accounts for partners in your on-premises Active Directory (AD)
  • sync these accounts to Azure Active Directory (AAD)
  • Exchange RecipientType is MailUser
  • you assign one of the following licenses:
    • Customer Lockbox (in combination with SPO)
    • Microsoft 365 Advanced Auditing

For the others, feel free continue reading. It might open your eyes for some issues your facing.

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