There are a great number of very well written guides, just on this site alone, pertaining to the correct process by which to migrate information within Microsoft Exchange from one server to another. The process (briefly) involves joining a later model server to the domain of the earlier server, adding exchange, migrating it, and decommissioning the old server.
That's all well and good, but as a network administrator of a small business with no more than 25 employees, I've really had enough of the old domain I inherited. It wasn't configured properly and it isn't to my liking. So I'm wondering if there's a relatively painless method by which I can get all my users email (because that is ALL they use this server for...until I show them otherwise) without actually joining this lovely new server to the icky old one.
Given the option I'd just export PSTs and reimport them into newly made user accounts, but several users don't understand the concept of archiving. I believe one user has a mailbox that is over 13 gigs in size.
They're fairly concerned about things that might get left behind due to compliance/auditing reasons, but I plan to seal the old server for archiving purposes, and export all the mail on it to EML as well. (No, that's not my idea, but it should ensure we get nearly everything.)
So, suggestions? And yes, I suppose suggesting "What you're trying to do is a horrible idea." is also a valid suggestion. (Provided you explain why, of course.)
Thank you in advance, regardless. I tried searching for this, but all searches just turned up HOW to migrate exchange after joining to the domain rather than how to AVOID joining the domain to get the data across.