Hi , I am running a multi site with subdirectories, (I have used domain mapping for domain redirection), the problem is that some instances of my multusite have a valid robots.txt (like http://energie.les-guides-agir.com/robots.txt)but some subdirectories don't (like http://eau-chaude-sanitaire.les-guides-agir.com/robots.txt), and those domains with no robots.txt are not being indexed at all or the index rate is so low, can any one resolve this mystery please?