http://blogs.msdn.com/douggowans/archive/2009/02/01/getting-your-exchange-2007-project-approved.aspxSo this is the last of these blogs for the moment.  This is the list of blogs that I wrote on the subject: Part 1 (Fewer Servers supporting More Mailboxes) Part 2 (Make your backups more cost effective…) Part 3 (Storage) Part 4 (Big Mailboxes) Parten-USCommunityServer 2.1 SP1 (Build: 61025.2)