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The email pictured below was received on March 17, 2021. It has a number of things that indicate it is a phishing attempt. I was confused when I first saw this email because I didn't remember warning students about receiving emails from AU people they don't know. The reason I don't remember it is because I sent that email six years ago.
Looking at the header information reveals a few more details. You can see this by clicking on the drop down triangle where it says "to me" below the sender's email address (see image above).