sis-queue: Parent filesystem not given as parameter

[Aki Tuomi]

On 26.9.2019 16.29, Ralf Hildebrandt via dovecot wrote:
> I tried to change:
> mail_attachment_fs = sis posix
> to
> mail_attachment_fs = sis-queue posix
>
> and immediately failed with:
>
> Failed to initialize user: Namespace '': mdbox: mail_attachment_fs: sis-queue: Parent filesystem not given as parameter
>
> Where do I specify the "Parent filesystem"?

sis-queue:/path/to/something

Aki