I have 3 websites on a dedicate server (with cent os and Plesk control panel) and one of these websites must ServerAlias * when I try this in httpd.include , other two websites alias on mastersite.com but I dont want this i solved it with dedicated ip , but now I want do it with one ip <VirtualHost xx.xx.xx.xx:80> ServerName mastersite.com:80 ServerAlias * UseCanonicalName Off SuexecUserGroup .. .. .. sorry for my English