Due to some major balls up, I have lost IMAP accounts during a domain transfer. Users still have 'cached' copies in their mail clients (Outlook 2007/2010/express). I know that if I recreate the mailboxes on the new server, they'll lose the emails they have locally, as soon as the client syncs with the server.
Is there a/what is the best way, to a) Sync the other way so that mail on the client is added to the server (if I recreate their account) or b) backup the mail locally (you cant even copy the mail from folder to personal folder when the the server is offline).
Note - I will need to recreate the same email addresses for each user, so simply keeping the stored mails and working offline will not do.
Thanks in advance.