[Dovecot] doveadm backup - Fatal: All your namespaces have a location setting.

[Tobias Hachmer]

Hello list,

I am using dovecot v2.1.9 and have a problem with doveadm backup:

# doveadm backup -u user at domain.com 
maildir:/backup/domain.com/user/Maildir
doveadm(user at domain.com): Fatal: All your namespaces have a location 
setting. It should be empty (default mail_location) in the namespace to 
be converted.

Here my namespace config:
namespace {
   list = children
   location = 
maildir:/var/vmail/%%d/%%n/Maildir:INDEX=/var/vmail/%d/%n/shared/%%u
   prefix = Gemeinsame-Postfaecher/%%u/
   separator = /
   subscriptions = no
   type = shared
}
namespace inbox {
   inbox = yes
   location = 
maildir:/var/vmail/%d/%n/Maildir:INDEX=/var/vmail/indexes/%u
   prefix =
   separator = /
   subscriptions = yes
   type = private
}

Have I got a problem with my namespace config?

Regards,
Tobias Hachmer