Although it may have worked in the past, if you want to use Outlook Web Access (OWA) to read your e-mail, you need to use the following web address:
If you use www.exchange.iastate.edu, you may see: There is a problem with this website's security certificate.' exchange.iastate.edu will get you where you need to be to login and read your email, view your calendar, etc.
If you've already tried www.exchange.iastate.edu, you may find that your browser wants to helpfully fill in the 'www.' If this is the case, you may need to click in the URL and manually delete 'www' before you can proceed to the login screen.