I am confused by a few things with your question...
My Outlook Express doesn't receive forwarded email (or sent directly) from MY Outlook Express address or forwarded (or sent directly) ...
Outlook Express, by itself, does not have it's own email address. You configure it to use other existing email addresses. So there is no such thing as a Outlook Express address. If you are not sure which address is configured, go to Tools then Accounts the click on the mail tab. These are your email accounts. You can further inspect each accounts configurations options by clicking on properties