[support] Drupal Guestbook (DGB) emails for site guestbook and user guestbook

Hi, Installed DGB 6.x-1.3 and enabled "DGB: send email" trigger. This works like a charm for user to user guestbook entries.. mails go fine to the guestbook owner (with email set to the owner's email address - %author). But for the site-guestbook, this fails as tehre's no owner of the site-guestbook (so I guess).. any workaround for this? all help appreciated. cheers - Ben