Thank you so much Danny!!! After countless attempts to update my settings exactly as listed on the website I read this thread to find many Cox customers also experiencing the same problem. I had even tried using a different app on my PC for mail, only to encounter the same problem of either not being able to send outgoing mail or the repeated asking for password which was rejected by the server. After reading your post above I changed my password (actually didn't change it, but deleted the field and typed in the same password). After @ 30 minutes I successfully sent an e-mail to my work e-mail address from my home PC and phone. It would be a great help to other Cox customers if this little tidbit of information were added in with the instructions for updating the settings for increased security. I don't believe I saw it there. Hopefully others will read your instructions and have the same success. Thank you again. You made my day.
