Security Bulletin MS11-100 was released at the end of last year and the Exchange Team informed the users that they have finished testing on Exchange 2010/2007/2003 running on either 2008 R2, 2003 and 2008 and the recommendation is to update the affected servers.
About The Author
Anderson Patricio is a Canadian MVP in Cloud and Datacenter Management, and Office Server and Services, besides of the Microsoft Award he also holds a Solutions Master (MCSM) in Exchange, CISSP and several other certifications. Anderson contributes to the Microsoft Community with articles, tutorials, blog posts, twitter, forums and book reviews. He is a regular contributor here at Techgenix.com, MSExchange.org, ITPROCentral.com and Anderson Patricio.org (Portuguese).