smtpout.secureserver.net failing intermittenty about one month ago on all GoDaddy email addresses that has worked for about two years. The error returned is Server Error=530, Server Response=530 authentication required, Server='smtpout.secureserver.net'. If I wait about a day or two it will start working but only for about half of a day. Neither GoDaddy or Comcast is willing to troubleshoot the problem. They just point fingers to each other. I have tried different ports, SSL, different GoDaddy accounts with no joy. Does anyone have any solution ideas?
It looks like you are trying to configure an email client like Outlook or Thunderbird. If so then please share with us the OS, application name and version.
Also, which mobile broadband device are you attempting to view/access these websites from?
I use the smtpout.secureserver.net with Godaddy and all works well with my Verizon Account. Check your username password and ports
SMTP Port 25
FYI it could be a godaddy issue , techs at godaddy dont always have your best interest at heart.