Exchange Hosted Services at Microsoft
Exchange Hosted Services at Microsoft is a new technical whitepaper from Microsoft IT Showcase.
"The Microsoft Information Technology (Microsoft IT) group required a reliable and cost-efficient solution to increase protection against spam, viruses, and other messaging threats. Microsoft IT implemented Microsoft® Exchange Hosted Services to meet these needs."
If you want to know why is spam a big problem for Microsoft, look at the following picture:
"Spam submission attempts have increased at Microsoft over the past five years by more than a factor of 10 and almost tripled from 11 million to 28 million submission attempts in the fiscal year of 2007/2008, as indicated in Figure."