On Sun, 13 Jan 2008, Someone Something wrote:
offlineimap looks like it will work. Do you know if it works well on big changes? I have about 1.5 gigs of email at the local site that will need to be uploaded to the main server. After its uploaded it will have to weed through it all during the sync every time. Think that will be ok?
BTW, I use offlineimap's IMAP<->Maildir sync, not IMAP<->IMAP, which is newer and I trust it less. It's okay for large mailboxes; the first sync will take forever, but after that it's not too bad.
I would make backups; a friend ran into a Dovecot bug that due to memory pressure didn't list all the UIDs in a Maildir, so offlineimap thought the messages were remotely deleted. I've never suffered problems like this, and maybe no one else will now that the Dovecot bug is fixed, but it was sad and worth warning about. You could instead of just relying on backups use offlineimap's feature that tells it not to really delete mail; I don't remember what it's called.
An alternate strategy is to use git (or similar) to mirror the Maildir structure across the network.
-- Asheesh.
-- Some restrictions may apply.