[Dovecot] Autocreate No namespace for Problem

[tibby]

Hi!

I see this in the log:
autocreate: No namespace found for Trash
autocreate: No namespace found for Spam
autocreate: No namespace found for Sent
autocreate: No namespace found for Trash
autocreate: No namespace found for Spam
autocreate: No namespace found for Sent

Why do I get this error ?
Do I need to create a separate namespace for every folder?

The config file looks like this:
namespace private {
    separator = .
    prefix = INBOX.
    inbox = yes
    subscriptions = yes
    list = yes
}
...
plugin {
  autocreate = Trash
  autocreate2 = Spam
  autocreate3 = Sent
  autosubscribe = Trash
  autosubscribe2 = Spam
  autosubscribe3 = Sent
}

Thanks!