We are using Exchange 2010 with Outlook 2010 for clients. No one on the network is able to get Outlook 2010 to filter spam anymore. We have a 3rd party spam filter on the perimeter that then hands messages off to Exchange. All of the messages delivered to Outlook from our Exchange are marked with a SCL of -1.
We have set the parameters as described in http://support.microsoft.com/kb/2276432 but no change. Any ideas?