[NBLUG/talk] Moving Mail services from one server to another

[Walter Hansen]

Thanks. I'll start investigating these methods. This sounds like a much
better plan.

> Whenever I've changed mail servers, once the new server was configured
> and tested, I would change the MX record over, and also set-up the old
> mail server to stop accepting mail and begin relaying mail to the new
> server.  At the same time, I would begin migrating mailboxes by using
> 'mb2md' which is an amazing utility to convert mbox-style mail stores to
> Maildir-style mail stores.  This wouldn't require the client to check
> multiple mailboxes and also would lend towards the zero downtime goal of
> most migrations.  There would, of course, be a period of time where not
> all mail would be accessible to the client, but I think this is about as
> good as it gets for your situation.
>
> - Chris
>
> -----Original Message-----
> From: talk-bounces at nblug.org [mailto:talk-bounces at nblug.org] On Behalf
> Of Walter Hansen
> Sent: Thursday, May 04, 2006 6:55 PM
> To: talk at nblug.org
> Subject: [NBLUG/talk] Moving Mail services from one server to another
>
> I'm moving mailservices from one to another as part of an upgrade from a
> Mandrake 10 to Mandriva 2006 (sonic colo server).
>
> On the old box I was using old style mailboxes in /var/spool/mail/ and a
> cute little pop3 utility to serve them.
>
> I'm sure the new server is set up for the distributed mailboxes.
>
> I've only got a handful of users and would like to add spam filtering
> "[SPAM]" at sometime if that's not a big deal.
>
> Anyway any suggestions on how to do this. I'm thinking I should put both
> mailservers in DNS, and have the users configure their programs to check
> both servers, then remove the old server from DNS and once the old
> server has no traffic remove it from the users configurations.
>
> I'd rather not see droped mail in between.
>
>
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