Be alert to phishing messages like this example which try to fool you into clicking the link because it contains "ltshelpdesk". You will notice that the link actually goes to the domain 'moonfruit.com', and was sent from an email address reportedly from 'slu.edu', not 'lehigh.edu'. Another hint of possible phishing is the emphasis on urgency and poor grammar.
Do not click on links that you are unfamiliar with, or that don't come from lehigh.edu domains. Simply delete the message.