Thank you Mike for your reply. I finally called AT&T (who took over from Bellsouth my email service). With their guidance I changed in my Mail, in Preferences the incoming, outgoing addresses, port, use SSL and there was even an issue with my password. In one of their AT&T web sites I moved my incoming emails from Spam to the Inbox. After an hour we got my incoming emails to come in my inbox. It's funny they told me to change everything to the way it was back in Aug. I hope it stays stable from now on.