Try following these steps I just wrote out. It should work.
Go into your iPhone's settings
Push "Mail, Contacts, Calendars"
Push "Add Account..."
Push "Other"
Push "Add Mail Account"
For "Name" put your name
For "Address" put your full
xxxxx@villanova.edu address
For "Password" use your email address' password
Push "Next"
For "Incoming Mail Server" use imap.villanova.edu as the host name
For "User Name" put your full
xxxxx@villanova.edu address
For "Password" use your email address' password
For "Outgoing Mail Server" use smtp.villanova.edu as the host name
[Stop and try to hit next]
If it doesn't work there, try also adding these under "Outgoing Mail Server":
For "User Name" put your full
xxxxx@villanova.edu address
For "Password" use your email address' password