Mary is having trouble getting her email. Leo says her email may be configured incorrectly. It may also be getting blocked from her antivirus software suite. Norton 360 is a perfect example. Leo suggests using POP3 as opposed to IMAP to see if that works. She can also try using port 9954 for incoming, and 465 for outgoing mail. That can bypass any blocking from the ISP. Here's a technote from Cox on how to fix it.