The best way to report messages like this is by using the “Report Message” button in Outlook. This creates a ticket for IT to investigate and submits submit the issue to Microsoft. We’ve included more details below in case they are helpful.
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From the Outlook client, the button is located in the ribbon toolbar and looks like this:
If you are using the Outlook web app, use the 3 dots at the right-hand side of a message:
From your iPad or iPhone, use the 3 dots at the right-hand side of a message:
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