I am a little frustrated right now. My office has been unable to SEND email for a little more than 36 hours from my lunarpages account.
So like a good little boy, I went online, started reading the forums, took another look at the tutorials, and double-checked all my settings. When none of that worked, I finally decided I needed to call Tech Support.
While sitting on hold for 5-8 minutes, a recorded message came on suggesting that if you are having trouble sending email you change your outgoing server port to 587. Viola! problem solved!

Can some please explain why this solution is not better advertised??

It might save you a few calls to tech support.
Just my $.02