Great article on SP2 spam filtering

I missed this in all the hubbub here at el rancho, but Alexander Nikolayev posted a terrific treatment of the Exchange 2003 SP2 anti-spam process at the Exchange team blog. He covers how the new SPF/Sender ID filtering process works in conjunction with the existing filtering features. Exchange 2003 SP2 is the only spam filter that Microsoft’s using for their 90,000+ worldwide mailboxes; I think that’s a pretty strong endorsement of its capabilities.