On 1 December 2011 04:56, Roland de Lepper <roland.de.lep...@gmail.com> wrote: > Hi, > > Where're planning to migrate postfix from Suse to Ubuntu 10.04 LTS. The > Postfix version on Suse has an higher version number than in Ubuntu 10.04LTS > (2.7.2 - 2.7.0). > > Because of the migration we have to shutdown the MySQL server to make a full > dump of it and import is on the new mailserver. In the meantime, all mail > coming to the old-mailserver will be stored in the HOLD queue. > When the new Mailserver is ready (with the same hostname and > public-ipaddress) I want to copy the HOLD queue from the old mailserver to > the new mailserver, then do a postsuper -r ALL to deliver the messages on > the new mailserver.
I can't tell you. But why not stop postfix BEFORE you stop the database? That way every (legitimate) sending server will hold outgoing mail for up to 5 days and you can then copy your DB in peace, move it to the new box, set it up, make sure it's working and generally not operate under any time pressure (so long as you warn your users there is an outage window). Simon
