I have an exch 2003 with about 2500 users and we are getting ready to migrate the users over to the exch 2010 server. This process is going to take about a month and half or so. So the exch 2003 and 2010 are going to be running together for some time. My question is, do I need to change the OAB generation to point to the 2010 server or leave it pointing to the 2003 server by creating a new OAB?
Also, what is the easiest way to migrate the public folders from the 2003 to the 2010 server and can I do that now since users will be using both exch 2003 and exch 2010 for some time until the migration is complete.