Shortly before 1AM, the University's incoming mail server crashed because of an inconsistency in its filesystem. As a result of this, you'll be unable to access or read your Rhodes mail at present.
It is currently in the process of checking its disks, which may take up to an hour to complete. Mail services will be restored once this has finished.
Outgoing e-mail can still be sent, and mail to Rhodes addresses will be queued until the mail server is available again.