Does Norton only work in Outlook?
Spam Killer works as a program running in the background, and removes the spam from the server before I download it. I download my mail into Outlook when I get home.
I guess if Norton only works in Outlook, the Web Client is probably pulling the spam from the server before it is downloaded into Outlook. How long do you have the send/receive timer set? Does Outlook delete the mail from the server when it is downloaded?