title: $_POST from paypal response after payment is empty
body: <p>I created a hosted button using a business account and integrated that code with my php application.</p>
  
  <p>I use 'Website Payments Standard' and generated the 'Buy Now Button' using the tool provided in 'Merchant Services' page.</p>
  
  <p>I am using <a href="http://sandbox.paypal.com/" rel="nofollow">http://sandbox.paypal.com/</a> to test this.</p>
  
  <p>Configurations in Merchant Profile:</p>
  
  <ul>
  <li>Instant Payment Notification (IPN) is
  'Enabled' and 'Notification URL'
  given. </li>
  <li>Auto Return is On. </li>
  <li>Return URL specified (the same given above in notification URL) </li>
  <li>Payment Data Transfer is On </li>
  <li>Website Payment is Off</li>
  <li>PayPal Account Optional: is Off</li>
  </ul>
  
  <p>While creating the button also in the third option I gave the same notify_url.</p>
  
  <p>Transaction happens successfully and gets redirected to my notify_url.
  The issue is, $_POST from paypal response in my notified page is empty. </p>
  
  <p>I printed the $_POST in the first line of my notifier page itself. Do I need to add any other configuration? Am I making any mistake?</p>