Mail server migration: From one domain to another with AD users
We currently have 2 domains and we will need to move some users from DOMAINA to DOMAINB. We are using AD for domain authentication but linux servers for mail. I have a hundred or so users I will need to move over but we are only doing a handfull at a time. What is the best way to migrate their current mail over to the new mail server? Both mail servers are running courier with ~/Maildir mail directory. Most of the users if not all are using imap.
Could I use rsync to sync their home directory in DOMAINA(mailserverA) to their home directory on DOMAINB(mailserverB)? We have a script that will create their home directory on domainB once we are ready to move them.
Ive looked at getmail/fetchmail but haven't really seen a good way to xfer multiple users at once.
What would be the best way to mass move users home directories(or at least copy in case something goes wrong)