Doveadm Backup (other) issues

[Sami Ketola]

> On 7. Jun 2020, at 16.13, Gingko <ldiff001 at gingko.ovh> wrote:
> 
> Hello,
> 
> I also have issues using Dovecot Backup.
> 
> I am trying to Backup (or possibly Sync - one way) a single user IMAP account from a remote server, unknown type, to my own server.
> 
> For that purpose, I defined the following parameters :
> 
> imapc_host = <host name>
> imapc_user = <user name>
> imapc_password = <password>
> imapc_features = rfc822.size
> 
> (<user name> has format: name at example.com <mailto:name at example.com>, and <host name> is the name of the imap remote server that I use for getting mails)
> 
> … and then  I issued the following command:
> 
> doveadm backup -R -u <user name, format name at example.com <mailto:name at example.com>> imapc:
> 
> ... but doing this, I get the following answer:
> 
> dsync(<user name>): Info: imapc(<host name>:143): Connected to <host IP address>:143 (local 192.168.1.2:52940)
> dsync(<user name>): Error: Failed to initialize user: namespace configuration error: Namespace mail/ can't have alias_for= to a different storage (different root dirs)
> 
> How can I solve this?
> 
> If there is something not matching between servers, I may eventually change configuration on my side, but I think I would first have to know which feature(s) I have to know from the remote server in order to create the matching one on my server.
> 
> Is there a way to list all relevant data coming from the remote server?
> 
> Also:
> 
> Doing this, is it necessary that the source user name be the same as the destination user name? Is it possible to backup an IMAP account to a user account having a completely different name?
> 


Nope. Source and destination usernames can be different. Please post your doveconf -n as this is probably an error on your local config.

Sami

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