Can't receive/retrieve incoming emails on my sub domain

[hansbizonline80]

Hello there, I am having a problem receiving emails on my account such as email@mydomain.x10.bz. I tried sending a test email from my free account such as username@yahoo.com to my x10 hosting account such as email@mydomain.x10.bz. Please, i need someone to help me out on this one. Thanks and I hope to hear from you guys.. Cheers