brong at fastmail.fm
Tue Feb 3 22:02:20 EST 2009
On Tue, Feb 03, 2009 at 03:16:55PM -0800, Gary W. Smith wrote:
> I have a couple different servers that have several mailboxes on them
> and I would like to migrate them to a single new server. The new server
> will handle all of these mailboxes just fine. All of the mailboxes are
> unique across all of the servers.
> I have copied the /var/[spool/lib]/imap to the new server from one box
> and everything seems to be working fine there. Now it's the issue of
> getting the rest of the mailboxes over to the new machine. There are 4
> machines in total with about 2000 email accounts.
> I'd prefer not to use any type of imap copy as we want to preserve the
> flags and we don't have the luxury of changing the user passwords.
> Any suggestions?
Replication engine :)
Seriously, that's how we do it. Run up a sync_server on the new machine
and then sync_client -U each user from the old machine.
Obviously, you'll want to suspend delivery and stop IMAP clients for the
duration. We do this with some dastardly hacks in the authentication
daemon, a database field that our internal tools check before trying
to deliver, and a "grep $UserName $confdir/proc/* | xargs kill" moral
equivalent. You can probably manage with just removing the imapd and
lmtp lines from your cyrus.conf and doing it outside regular hours
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