using Murder for migration from UW IMAP

Rob Siemborski rjs3 at
Mon Dec 9 19:22:44 EST 2002

On Mon, 9 Dec 2002, John Alton Tamplin wrote:

> Would it be possible to use Murder to migrate from UW IMAP?  I have
> Cyrus setup and running on a new machine, but the problem is that taking
> everything down and converting all the mailboxes would be too much
> downtime (2-3 days).  What I was thinking of is setting up a frontend
> server with UW IMAP and Cyrus as the backend servers, with the initial
> mupdated database showing all the mailboxes were on the old IMAP server.
>  UW IMAP isn't going to talk to mupdated, but if no mailboxes are being
> created there it seems like that won't matter.  As each mailbox is moved
> to the new server, the master list of mailboxes is reflected to update
> the new location.
>  From my inspection of the documentation and some of the code, it looks
> like this should work with a couple of caveats (during the transition,
> users have to be prevented from creating new mailboxes -- this can be
> hacked in the code, and connections that have been referred to the old
> server have to be broken when the mailbox is transferred).  Does anyone
> see a reason why this won't work or any other gotchas to watch for?  Thanks.

So, the murder really isn't intended to work like this.

Does UW-IMAPd even support proxy authentication?

If it does, *offhand*, provided you're not using internal mechanisms to
move the mailboxes (i.e. you are moving them by hand), I don't really see
a reason this won't work, but I'm not going to recommend it.

Do you really have so much data that it would take 2-3 days to move it?


Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456
Research Systems Programmer * /usr/contributed Gatekeeper

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