The quickest way to check this is to login to your Webmail. ENTERYOURDOMAINHERE.com/webmail (Please replace ENTERYOURDOMAINHERE with your domain name).
You are then prompted to enter the email address & the password. Reset Email Password if Necessary – If your password is not accepted then this just means that you need to login to your Web Hosting Control Panel & reset the password for your email address.
Interestingly, doing this process, cleaned up the Inbox on my Bold to match Outlook.
The steps to do this process are below (which I suspect are similar for any Black Berry): The above steps forced my Inbox on the Black Berry to match the Inbox on Outlook.
I hope you found this information useful on how to fix your email issues.