dovecot - Aug 2017 - user data transfer when migrating to new server

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

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 ?

thanks, V

Hi,

I did with imapsync for one server but I had all the login / passwords.
The following I did with rsync transfer from one server to another, but the
mails where stored in files. Can't tell if you use any other method of mail
storage.

And if someone knows a trick about not redownloading the emails.... I'd
also like to know.

Cheers,
Cedric

2017-08-22 16:57 GMT-04:00 <voytek at sbt.net.au>:
> I;m setting up new server, what are the options for transferring user's
> mail ?
>
> 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 ?
>
> thanks, V
>

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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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