Microsoft has released the August 2007 update of the Windows Mail Junk E-mail Filter
>> Update for Windows Mail Junk E-mail Filter August 2007 (KB905866)
Install this update for Windows Mail to revise the definition files used to detect e-mail messages that should be considered junk e-mail or that may contain phishing content.
>> Update for Windows Mail Junk E-mail Filter August 2007 (KB905866)