SPAM OR REAL?

I recevied an email addressed to myaccount@coxcommunications.com asking me to visit a link to change to yahoo, not sure if it is a real email from cox, asking to visit www.cox.com/emailmove. Is it from cox or not. Sender is rev_butler0226@cox.net

Has anybody else received an email like it? With the change to Yahoo, I'm not sure if this is a valid email.