replication newbie: some beginner questions

[Stefan G. Weichinger]

Am 17.04.20 um 03:37 schrieb @lbutlr:
> On 15 Apr 2020, at 07:50, Stefan G. Weichinger <lists at xunil.at>
> wrote:
>> So I think about how to get the mailboxes from A to B.
>> 
>> We use one UID afaik:
>> 
>> mail_home = /home/vmail/%d/%u mail_location = maildir:~
>> 
>> I read about dsync and wonder:
>> 
>> * does it make sense in this case to set up replication and let
>> the servers replicate at first while still running on the old
>> server?
> 
> I ave done this (dovevot mailers under a email user) and I simply
> used rsync to copy the mail to the new machine.
> 
> Once I had synced, I then synced again, shutdown the mail server,
> synced on last time, and started the mail server on the new hardware.
> The last sync only had to catch up a few emails, so all told I was
> down for a shorter time than a simple reboot.
> 
> That said, doing it via replication would have been “better” but in
> my case wasn’t worth the time it would have taken to setup, test,
> test, backup all the mail an extra time anyway, and then implement.

thanks for that feedback

Today I will setup the new server and try to enable replication.

I will connect both dovecots to the same instance of mariadb which
should let them know about all the existing mailboxes ... and then I
will see.

My question around the sieve-scripts is still open ... I assume I will
maybe try to replicate a sub-set of the mailboxes, check things ... and
then decide how to proceed.