Thank-you for your time and effort - We addressed all the problems that I was having and I understood everything should work.
I tested the site using the mxtoolbox website and it said that Port 25 was open, however, just before I threw the server against the wall, I called my ISP and sure enough, they had Port 25 blocked.
They opened the port and my Inbox was flooded with E-mail from my server.
Once again, thank you for everything and I apologize for having wasted any of your time. The configuration works and I can send and receive E-mails now.