The Visio 2010 add-in for Exchange Server 2010 makes it easy for Exchange administrators to manage, monitor, and administer user mailbox and user distribution group details. Instead of viewing single user data, administrators can create data linked Visio diagrams that display Exchange Server 2010 data, such as sites, servers etc. at a glance and dramatically increase productivity. This add-in has a client and a server component. The client component requires Visio Professional 2010 or Visio Premium 2010 and the server component requires SharePoint Server 2010. The server component makes it possible to publish the data linked diagram to SharePoint Server 2010 and refresh it in real-time for broader consumption.
Select the "Click here to download" button below for the add-in installation files (note: works for Exchange Server 2007 and Exchange Server 2010).