I just want to stop forwarded junk mail

I’m using GFI Mail Essentials in SBS2003 with Exchange environment for anti-spam filters. A particular user's Junk-mail is being forwarded to me since last week. I have checked and verified the Exchange General Tab in ADUC and user's Outlook but there was no rule to forward or redirect. This is happening only on this user and all other junk mails are being sent to me. I checked the few items via searches that I know or can find in the IT house.
