How to test BES email

We have trouble running SP4 update for our BES server. It stuck at updating the mdss database which is useless to us. However, it requires you updating it. Eventually, I talk to Blackberry support. Uninstall and reinstall SP4 without mdss. Now, it works flawlessly. However, I am not a BES user. How can I test it? Send an email to a BES user with subject confirm and the < > around the subject . If it is sent to the user Blackberry, you will receive a reply with subject "Blackberry Delivery Confirmation". Then you can tell if the email is delivered to Blackberry.