Hi, Terrence. We also commented on your KB feedback, just as a FYI.
In most cases the issue is SMTP authentication for outgoing mail. You either need it, and don't have it set up, or you don't need it, but you DO have it set up. Check with your hosting provider or mail administrator to see what the requirements are.
If you have system administrator access to your installation, you can view the SMTP logs to see what errors, if any, are being thrown. Just search for an email address you're sending to, and the date the email was sent, and see what turns up in the logs.
I hope that helps.