title: How to view the request IP through VPN tunnel to API
body: <p>I am working with SendGrid's API and we recently implemented IP restriction. We set it up so only requests from the fixed IP addresses assigned through our VPN will be allowed.</p>
  <p>As a test, I connected to our VPN and attempted calls through Postman. Unfortunately, I received a 403 error with a message stating our IP address is not whitelisted.</p>
  <p>How can I verify the IP address being SENT to SendGrid? I've tried <code>curl --trace-ascii - api.sendgrid.com</code> and <code>tracert -j api.sendgrid.com</code> without success. In both cases I just receive a timeout.</p>