How Microsoft IT fights viruses and spam

I’m a big fan of Microsoft’s “IT Showcase” series, which highlights how Microsoft uses its own technologies (aka “eats its own dog food”, or just “dogfoods”) to solve business problems. I didn’t know they’d expanded the showcase to include podcasts, though. This episode covers some of the key points of Microsoft’s spam, virus, and e-mail security infrastructure. Pretty interesting stuff, including a discussion of how they’re using Exchange 2007’s Edge Transport role as their primary perimeter system.