> On 3 Apr 2019, at 13.40, Michael Goth via dovecot <dovecot@dovecot.org> wrote:
>
> Hi!
>
> I'm trying to migrate a mailbox from an old IMAP server (not Dovecot) to a
> new Dovecot server with 'doveadm backup'. The command fails because of an
> unexpected character in a mailbox name:
>
>
> doveadm -o imapc_user=a...@example.org \
> -o imapc_password=XXX \
> -o imapc_host=old-mailserver.webflow.de \
> -o imapc_port=993 \
> -o imapc_ssl=imaps \
> -o imapc_ssl_verify=no \
> -o imapc_features=rfc822.size,fetch-headers \
> -o ssl_client_ca_dir=/etc/ssl \
> backup -R -f -x ~* -u migration...@example.org imapc:
>
> dsync(migration...@example.org): Info: imapc(old-mailserver.webflow.de:993):
> Connected to 1.1.1.1:993 (local 2.2.2.2:46154)
> dsync(migration...@example.org): Error: Failed to access mailbox Entw?rfe:
> mailbox does not exist
>
>
> The problem is with "Entw?rfe" here. It's actually Entw<0xfc>rfe, which
> translates to "Entwürfe" in ISO-8859-1.
>
> Why can't doveadm find that mailbox? Is the old mailserver misbehaving (I
> hope not because I have no idea how to change that...), or does this happen
> on the new server? Can I tell doveadm something that makes this work?
>
Can you log on the remote imap server with telnet or nc and ask for: A LIST ""
"*"
I think your legacy server does not encode the folder names correctly.
Sami
