Can't receive emails to aliases.

Can't receive emails to aliases.

I set up 2 email aliases under my default email address I set up using my domain name.  I can send emails out using the different aliases, by choosing the drop down menu in the 'From' section of the Compose email, but when I try to reply to the aliases as a test, I do not see where I receive the replies.  Can you please help me figure out how to receive emails sent to the other aliases?

Thanks,
Krista