http://blogs.technet.com/evand/archive/2004/07/30/202529.aspxHere's the description from the webpage: This technical reference guide presents a system architect's view of Exchange Server 2003. It includes a general overview of Exchange Server 2003 messaging system design, together with more specific details, suchen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/evand/archive/2004/07/30/202529.aspx#202620Sat, 31 Jul 2004 02:13:00 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:202620Adam's Mindspacehttp://blogs.technet.com/evand/archive/2004/07/30/202529.aspx#204505Mon, 02 Aug 2004 00:24:00 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:204505Christian SchindlerGreat Stuff! Everything I always wanted to know, but were afraid to ask... :-)