Mapi synchronisation between 2 or more Microsoft Exchange server

Hello, We're looking for an powerful tool that lets us synchronise multiple Microsoft Exchange 2003/2007/2010 servers using MAPI or using Microsoft Webaccess/Activesync Example 1, sync 5 users on 2 exchange servers GUI Configure the client to use 2 exchange servers fill in the authentication data for the 5 users choose the type of synchronisation, One-way or two-way choose the schedule, continuous or single event This is an proof of concept for us, if this project succeeds there will be an need for experts who can develop this for an enterprise environment.