Coach wrote:

I get a message that e-mail connection is lost. That one or more
e-mails can't be sent. Since I first posted, I divide the group in
half. The one group went through the other didn't. I'm thinking one
of my addresses is bad. Could that be it?

Sounds like you're on the right track. Now do the same to the half that
didn't work. Eventually you'll isolate the bad address.
--
Brian Tillman