HI All,

I just would like to ask You how to migrate Postfix in the most secure way from old system to new one ?

I already migrated /etc/postfix* configurations. I`m able to start all my Postfix instances, but I havent done yet any Postfix data migration - I mean /var/spool/postfix* and /var/spool/mail


Will it work if I will simply copy all files from /var/spool/mail and /var/spool/postfix* from an old server to the new one ? What about queues ? Is there any risk to loose some E-mails ?

I`m waiting for Your opinions.

With kind regards

Dlugasx

Assuming this is a mail server that generates no mail locally:

Once you stop postfix listening on the network it won't get any new mail but will process existing mail it has. With that all gone replace oldbox with newbox, test it and you're done. Inbound email will wait a short time but arrive as expected on newbox.

I wouldn't copy files under /var/spool/ . Make sure any aliases and mailing lists are created on newbox.

When I've done this I've opted to recreate stuff rather than transfer files. That way there's no chance of a config file applying to the wrong software version. http://www.ibiblio.org/harris/500milemail.html