doveadm backup|sync works for every folder but INBOX

[Ralf Becker]

Hi Aki,

Am 03.11.22 um 08:50 schrieb Aki Tuomi:
>> On 03/11/2022 09:46 EET Ralf Becker <rb at egroupware.org> wrote:
>>
>>   
>> I'm trying to migrate an old Cyrus 2.5 server to Dovecot 2.3.19 using
>> doveadm backup -R, which works for all folders but the INBOX itself,
>> which always stays empty.
>>
>> The Cyrus side uses altnamespace:no and unixhierarchysep:no, it's used
>> as imapc: remote in doveadm backup -R with imapc_list_prefix=INBOX
>>
>> Dovecot uses the following namespace to migrate into:
>>
>> namespace inboxes {
>>     inbox = yes
>>     location =
>>     mailbox Sent {
>>       auto = subscribe
>>       special_use = \Sent
>>     }
>>     ### some more folders omitted ###
>>     prefix = INBOX/
>>     separator = /
>>     subscriptions = no
>> }
> Hi!
>
> When syncing mailboxes from other server, you should use migration config file, which has **no** auto=subscribe or auto=create folders, as these can mess up with synchronization.
>
> Please see https://doc.dovecot.org/admin_manual/migrating_mailboxes/ for more details.

Does a migration config file specified with doveadm -c <file> add to and 
overwrite the existing Dovecot configuration for the time the command 
runs, like the -o options, or do I need to start a separate server with 
a full configuration to e.g. have my authentication and mailbox location 
available?

Ralf

-- 
Ralf Becker
EGroupware GmbH [www.egroupware.org]
Handelsregister HRB Kaiserslautern 3587
Geschäftsführer Birgit und Ralf Becker
Leibnizstr. 17, 67663 Kaiserslautern, Germany
Telefon +49 631 31657-0