I'm in the planing process to setup ( 1 main office, 2 branch offices - connected to the main via 128K Frame-Relay )while all 3 offices are directly connected to the internet as well. the main office is connected to the internet via 512K ADSL line. - I need to setup 1 domain, 1 forest ( or whatever is more adequate ) - I also want users to use MAPI clients ( outlook ) to connect to the exchange server(s). - Most of the staff are on the move between the offices (therefore mailboxes and public folders need to available). - we have real ip ranges @ all offices. - 3 sites are connected together via a cisco vpn with backup ISDN routes from branches to main in case the main links went down - I'm thnking of replicating exchange among 3 offices ? is this possible and how ? - if not ! any other solution ? Many thanks to all