* Simon Brereton <simon.brere...@buongiorno.com>: > On 17 November 2011 14:02, Dennis Carr <dennistheti...@chez-vrolet.net> wrote: > > I'm about to do a migration from one server to another - old server runs > > Debian Lenny, new one runs Squeeze, both with respective current versions of > > postfix. > > > > Long and short is that I'm basically preparing to migrate everything, > > including users and a mailman configuration, to the new box. Basic strategy > > I have is to shut down smtp on the old server during the course of the > > migration, and once postfix is configured on the new box with the users and > > mailman aliases, switch the old box over to being a secondary mx for a few > > days while DNS settles down.
Set DNS TTL for your MX to 1 hour. Setup and configure the new server. Use rsync to migrate mailman data and mailboxes (or dsync for mailboxes if you plan to use Dovecto too). When the old DNS TTL has expired shutdown the old SMTP. Do a last sync and put the new SMTP server to work. p@rick -- All technical questions asked privately will be automatically answered on the list and archived for public access unless privacy is explicitely required and justified. saslfinger (debugging SMTP AUTH): <http://postfix.state-of-mind.de/patrick.koetter/saslfinger/>
