Thanks. Update- 12 hours later-all incoming and outgoing emails to and from external sources are coming and going fine. My wife's computer receives my test emails that I send to ourselves (we share the same email address), my PC does not. Also, same thing with test emails from hers, sent to our own email address. She receives it back almost immediately, but nothing on mine. This has only occurred in the past 24 hours!!
In my Account settings, I have "Leave on Server" checked for 2 days, so I think that that should be OK?