Currently I have an Exchange 2003 install on a Server 2003 R2 Dell server that is getting on a bit. On top of that we want to install a new exchange server and a Blackberry server.
1) Is it worth migrating the 2003 data to 2010 on new hardware (users all have Outlook 2003)?
2) I believe that with Exchange 2003, with more than one data server it was necessary/useful to utilise a front-end server for webmail/RPC/etc. Is this still the case with 2010? So ultimately am I going to be running x3 Exchange servers - 2 for mailboxes and 1 front end?
3) Could I keep the existing 2003 server and once all the data has been removed convert it to a front end server? This would seem to be helpful as all client installs reference the server by name, if it's FE then it'll just redirect to the appropriate BE xch server?
4) Any comments on the Blackberry server working with 2010? Ideally I think we'd prefer it to be on a different server to the actual exchange OS, but would a virtual machine do the job? Note that because of mailbox organisation the Blackberry server would only ever be referencing one of the exchange servers.
Trying to get my head round what could be a fairly significant change in the systems. Any advice comments welcome.