I need advice on how to go about moving company emails from an old server to our new VPS with cPanel. This is the situation:
Our old server with Web Host A, currently has all our company emails hosted. It is a mbox system with 53 users and 74 email addresses (some users have multiple email addresses). Users check their email using one of the following: Outlook, Thunderbird, Entourage, Webmail. Some of these are setup using POP and some with IMAP.
Our new server with Web Host B is a VPS with cPanel and WHM and has a maildir system.
How do I go about transferring all the emails to the new server, in the new format? At what point in the process will I transfer the domain name?