Thank you. That did help. My your path through life be smooth.
I had the box, Secure Sockets when receiving(default) set to If Available Start TTLS. I changed it to "never" as indicated. But what does this mean to the security of my email?
Here is what the error message was about:
A progress message pops up and says fetching list from server mail.mydomain.com
And then I got the message "The IMAP command has failed"