All *.domainname.tld subdomains on my server which are not set up in Plesk as subdomains, are redirected to the sitebuilder install script: /sitebuilder/install.php rechable for everyone who types *.domainname.tld in the location bar of his browser. How can I disable this behaviour. I don't want to use sitebuilder, I didn't ask him to do anything! All not configuerd subdomains should be redirected to the standard domain: www.domainname.tld I'm using plesk 7.53 and 7.54 on linux machines. Thank for your help!