Installing the Expression Web Trial on a workstation with Outlook 2003 will result in Outlook’s Junk E-mail feature ceasing to function. I have tested this in POP and IMAP accounts with the same result.
There are two solutions that worked for me to bring Outlook’s junk e-mail processing back:
- Running ‘Detect and Repair’ from the Outlook Help menu
- Removing the latest Outlook junk email filter using Add/Remove Programs in Control Panel (with Show Updates selected) and reapplying it through Microsoft Update.