Outside email accounts have been impersonating other Engineering people in an attempt to scam you for iTunes gift cards. They start by asking if you are available and then request you buy gift cards for an urgent task. It is likely a false identity and they are trying to steal money from you in the form of gift cards. Do not buy gift cards or prepaid credit cards as a favor for other people.
If you have questions about any suspicious mail, please contact the DECS Support Office by emailing firstname.lastname@example.org or calling 517-353-8891.