I am moving the mail for our company from a Hosted Exchange back into a self hosted Exchange box running Exchange 2010. I have seen articles on using PST files to migrate the mail, but there seem to be some issues when doing that (unable to reply to migrated mail, unable to move contacts). Is there a better way? Is my only option to manually create the accounts in the new domain and import PST files?
Edit: The hosted exchange is Exchange 2007 through Mailstreet. I haven't contacted them yet as I wanted to have a plan in place before I did. I am not sure what type of access I can get to the servers.