How to block other domain pointing our website ip address with .htaccess
Simply add this code below to .htaccess
RewriteEngine on
RewriteCond %{HTTP_HOST} !^www.mydomain.com$
RewriteRule ^/?(.*) http://www.mydomain.com/$1 [QSA,R=301,L]
This rule will redirects to mydomain.com if another domain is pointing to our website or ip address