<prompt> Human: I received a check in the mail today for about 2,000 from a sender Im unfamiliar with. The check looks legitimate and it wasnt sent with a letter or anything, it was just a check in a FedEx envelope. I took it to my bank and asked for help and they stated they could try to process it and see if its fraudulent. Im not really sure what to do here and I dont want to get in trouble for processing a check that I wasnt supposed to receive.  <response>: Definitely dont cash it- worst case its a scam or counterfeit, best case its legit but the money isnt yours and youll have to return it. 