title: Prevent website to send specific post requests
body: <p>Is it possible to prevent a specific site (example: facebook.com) to send a specific post request? </p>
  
  <p>Is there any way i can "ban" facebook to post to a specific url?</p>
  
  <p>I'm trying to block the "<a href="https://www.messenger.com/ajax/mercury/delivery_receipts.php?dpr=2" rel="nofollow noreferrer">https://www.messenger.com/ajax/mercury/delivery_receipts.php?dpr=2</a>" request</p>