Magazine Aug 2010 http://technet.microsoft.com/nl-be/magazine/ff926075(en-us).aspx
2 very interesting articles :
Office Communications Server 2007 R2: Backup and Restore Your OCS 2007 R2 Contacts http://technet.microsoft.com/nl-be/magazine/ff899323(en-us).aspx
Exchange Queue & A: Focus on Exchange Server 2010 SP1 http://technet.microsoft.com/nl-be/magazine/ff943663(en-us).aspx