Email to multiple domains

Email to multiple domains

I'm trying to configure email for three different domains. I have the first one running without a problem. When I go into my control panel , my other two have been verified and appear to be active, but I can't seem to receive email in the other two accounts. Should I expect to see all the email in a single inbox or will they have individual boxes. I tried logging in through one of the other domain account but end up essentially in the same place as my first do aim's login. Any suggestions?