Hello,
Thank you for reporting this to us! Well done for identifying this as a Phishing simulation.
While the email appeared to come from a legitimate internal address, this was a controlled 'spoofing' test conducted by the IT team. To ensure the simulation remains effective for everyone, please keep this under wraps and allow your colleagues to go through the scenario themselves.
We will be releasing a SharePoint post in the next few days with a full breakdown of the test. For now, please ensure you have clicked Report > Report Phishing in Outlook to complete the process.
Great job staying vigilant!