Users and junkmail

I have a user setup under users in the panel, this one was setup when I first opened my DH acct for FTP. It appears that when a user is setup there, it gets junkmail notifications, but there is no junk mail box when you log into webmail, (only the normal in, out, etc). Anyone have an idea of how to recover messages trapped in the seemingly non-existant box?

edit- thanks in advance for advice!