So I have an ageing Zentyal 3.2 server with Zarafa that I am retiring. I need to transfer the email to the new server running 4.2. In the past I have used various tools to do this but my preferred method is to use Thunderbird to copy the messages across, fortunately there are only a handful of accounts. My problem is that I cannot authenticate to the server. I have tried imap, imaps, pop, pops without any success. Please can someone kindly post what settings i need for username, password encryption, ports etc?
Thanks