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Can't send as shared mailbox when Show in Global Address list set to No
I set up a new shared mailbox in Office 365 Admin Center and added members and also set Show in Global Address List to No, since we do not want this shared address to show in the address list. Me...
Yes, this is the expected behavior.
Hi Jeff,
as Vasil has already said that's by design. You can try to use an alternative way to send as non-default address.