Hi
- where did I fail (ignoring the backups, please. That's .. something I know)
From the man page: "backup - Backup mails from default mail location to location2 (or vice versa, if -R parameter is given). No changes are ever done to the source location. Any changes done in destination are discarded."
The last sentence describes what happened to you: all new mail on the new machine is a "change" and was discarded (by deleting new mail.) If I'm not mistaken, this is correct behaviour for backup mode - you get exact copy of the source side (maildir:/tmp/mail_backup) on destination side (d...@darklajid.de)
- Can I use dsync ... for backups? I don't think that this is a good idea after yesterday night?
AFAIK you can safely use it to make the backup. I'm not sure if it can be reliably used to restore data (don't think so but I'm not an expert.) I'd use doveadm import for that.
