I have an AD network with one domain that spans 3 sites. I have an Exchange 2007 server in my main site called site A. I have site B and site C that are remote offices and we have a dedicated 3 Mbps pipe connecting them to the main site A. Right now, my users in site B and Site C are pulling their mail via pop3 from our Exchange server in site A.
Is it possible to put an Exchange server in Site B so the users in Site B and Site C can access an Exchange server that is geographically closer to them than pulling mail across a WAN via pop3? Is it possible to replicate the 2 mail servers (at night), like AD would do between site, so that I always have up to date data on both Exchange servers?