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@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
... 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?
Regards,
Gingko