This is a 3rd Party add-in that allows your SBS Server to auto-retrieve e-mail from your ISP using POP3. SBS on it's own doesn't have this ability. In order to get this to work, you have to setup the login name to be identical to your e-mail name (e.g. firstlast is your login and email@example.com is your e-mail).
I have since created a new user and everything matches. Also the user is enabled in the Native POP3. I cannot figoure out why this isn't working. Hopefully someone else out there has used the software.
So, basically, the messages remain at the ISP. Native POP3 isn't even retrieving them. Apparently we do have the correct number of licenses. Maybe there's a way I can check that?