I would like to transfer mail for some users from an old dovecot (with no
doveadm) to a modern dovecot (2.3.2). I've read up on
https://wiki2.dovecot.org/Tools/Doveadm/Sync
https://wiki2.dovecot.org/Migration/Dsync
and I'm not sure if I can use doveadm for this purpose.
I need doveadm to login to the remote server (source) with a
username/password via IMAP, fetch all mail and deliver it to a local user
(target), preferrably with the same folder structure that exists on the
source account.
Is this possible?
I don't understand this page completely:
https://wiki2.dovecot.org/Migration/Dsync
For some testing (that's why I used pop3, to keep it simple) I put a file
for pop3c in conf.d (mostly identical with the file shown on that page)
and restarted dovecot. Then I tried a command line like this:
doveadm -o pop3c_user=user -o pop3c_password=password backup -R -u
user at domain pop3c:
This creates an error:
dsync(user at domain): Error: Mail locations must use the same virtual
mailbox hierarchy separator (specify separator for the default namespace)
I'm not sure what this exactly means.
Does it refer to the account naming structure of user at domain? The source
server does not have such usernames, only the target server I run the
command on. Or does it refer to structure within the mailbox? (which can't
really be the case as it doesn't login to the source and can't know the
structure yet).
So, if it indeed refers to the user naming structure, can I tell it to use
the "simple" account names on the source machine?
Am I correct in assuming that I can override any pop3c_ setting in the
conf file with -o? For instance also using -o pop3c_host= and that if
there is -o pop3c_user=user on the command line I don't need a pop3c_user
in the conf file? (no master-user).
Thanks for any help on this.
(If it doesn't work I can use fetchmail, but that is much less preferrable
as it "delivers" all mail, so it's all "new" and in the
INBOX.
Kai
