user data transfer when migrating to new server

[Steffen Kaiser]

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On Wed, 23 Aug 2017, voytek at sbt.net.au wrote:

> I;m setting up new server, what are the options for transferring user's
> mail ?

do you change the mail storage backend? If not, rsync all the mailbox 1:1 
to the new server, including all auxiliary file of Dovecot.

> I've tried imapsync, that seems to work well, but, what options do I have
> for doing accounts or domains where I don't know user's password ?

> last time I've done, some users had lengthy period of re downloading 'old'
> mails from new server, is there a way to overcome this ?

Prevent the login to the old server while the files are copied to the new 
server. If you use POP, ensure you have the same UID format.

- -- 
Steffen Kaiser
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