Cant send emails with Mozilla Thunderbird?

My emails are coming through to my inbox, but every time I try and send them i get this pop up

"Login to server smtpout.secureserver.net failed."

I have tried with the POP without SSL and POP with SSL as per the guide HERE

Try this.

http://www.computerrepairhouston.net/wpress/blog/godaddy-smtp-server-problem-get-530-error-cant-authenticate-to-smtpout-secureserver-net/