The reason for this error is that your email server requires SMTP Authentication to send outgoing mail. In order to resolve this issue you will need to configure your email client (Outlook, Outlook Express, Eudora, Thunderbird, etc) so that you are an authenticated user.
For Outlook do the following:
For Outlook Express do the following:
Trouble logging in? Simply enter your email address below and we will send you an email that will allow you to reset your login.
For faster and more reliable delivery, add support@rackteam.com to your trusted senders list in your email software.