Ok well I've always had this problem for the last couple of months where the php mail(); function didn't work for whatever reason. Along with that the WebMail on Cpanel also didn't work. However, after messing with the MX settings for the domain and the E-mail authentication I got it to work sort of. I was able to use the mail() function to send to my address firstname.lastname@example.org successfully, however when I tried to send it to my other domain that I use parked at my web site it doesn't send. I did trace route to see if I can send to my domain but it came up as a failure. I got the majority of it to work, just I can't send it to my domain. My theory is that I don't have the domain set up right in the MX settings, I'll try to get that fixed, but if anyone knows a quick fix right now it would be helpful.