No problem, i forgot the receive problem.. je..
Let see... Go to the Administrator tree -> Server -> Config -> EMail -> Check "Save Log"
Then, send some mail from hotmail to your domain2 account.
Wait 5 or 10 minutes. (you can use them to get putty or some similar SSH client software)
Log in using ssh as root.
Go to /var/log open the maillog file using vi or similar (vi maillog) I personally recomend you to install MC (put yum install mc).
Look if you find the hotmail attempt to deliver de message, you can try searching for your domain2 email.
Let me know what happened.