I can send them but they are not being recieved. when I try to send an email from a non-zoho email provider to my zoho email I get this error:

 

550 550 #5.1.0 Address rejected

 

Why cant I recieve emails?

 

I just set up my owm domain for zoho and am trying to receive emails at a user alias I created for my main email, they go out but they do not come in...