> On 7. Jun 2020, at 16.13, Gingko <ldiff...@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: n...@example.com <mailto:n...@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 n...@example.com > <mailto:n...@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