Once you configure it and make adjustments for false positives, the filtering technology built into Outlook 2007 can be an effective tool for waging your daily fight against junk e-mail. The filtering technology in Outlook 2007 isn’t perfect, however, so you might need to handle junk e-mail in other ways. One technique is to create your own rules to handle exceptions that the built-in filters can’t adequately address.
You can create rules that look explicitly for keywords or phrases in the subject or body of a message or look for specific other criteria and then move those messages to the Junk E-Mail folder (or delete them). See Chapter 11, for details on creating and working with rules.