<IfModule mod_rewrite.c>
RewriteCond %{REQUEST_METHOD} ^(delete|head|trace|track) [NC]
RewriteRule .* - [F,L]
</IfModule>

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_METHOD} POST
RewriteCond %{HTTP_USER_AGENT} ^$ [OR]
RewriteCond %{HTTP_REFERER} !(.*)siteadresiniz.com(.*) [NC]
RewriteCond %{REQUEST_URI} /wp-comments-post\.php [NC]
RewriteRule .* - [F]
</IfModule>