I have learnt a bit more, there seems to be a bit of a conflict between what needs to be pop/smtp server.

My pop server is pop.clar.net
and my smtp is relay.clara.net but this morning when I tried to send mail using OE, the avast scanning warning cam up at bottom of screen but mail would not go.

When I went to OE/tools/mail/properties/ my server incoming and outgoing had changed from those above to 127.0.0.1 so it seemed like if I want the certification, I needed to change to those numbers, but if I did that, I could not send mail. TOTALLY CONFUSED.