DO NOT respond!IT does not ask for info this way. If you did respond, get in touch with the Helpdesk right away (email@example.com or 203-392-5123). You also should change your password. NOW.
I've gotten a bunch of these on different email accounts; they are exactly alike, except for the domain name of the email. No IT or technical support department asks for info like this. If you get something like this and aren't sure, go to your email, IT, or IPS website (via your own bookmarks or web search, not a link in the email) and find the help links. If possible, forward them the email, so that they can tell if it was legitimate.
Stay safe, folks.