On Mon, 4 Dec 2017 12:53:15 -0800 (PST) Joseph Tam <jtam.home@gmail.com> wrote:
"Davide Marchi" <danjde@msw.it> writes:
UW-IMAP's mailutil, imapsync, YippieMove and Larch.
Whatever you use, *don't* use UW-IMAP's mailutil unless you got lots of time to kill. It is dreadfully slow -- I used it to export some of my users' mailboxes to Gmail or other remote mail servers, and I could almost cut&paste the messages faster.
Like Aki said, if you have the same mailbox format and FS access on both sides, rsync is much simpler. You can also try exporting the old mailboxes via NFS, and with some artful symlinks, march through your user mailboxes replacing the symlinks with the instantiated local copies and have almost zero downtime.
Joseph Tam <jtam.home@gmail.com>
Another possibility is to use an email client like Claws-Mail, which is very fast, create two accounts: One for the old IMAP, one for the new one, and just copy trees.
SteveT
Steve Litt November 2017 featured book: Troubleshooting: Just the Facts http://www.troubleshooters.com/tjust