title: Grafana webhooks - failed to send
body: <p>I'm trying to set up Grafana to send webhooks to Microsoft Teams. I'm able to curl via terminal to the address but it's not possible via Grafanas interface. </p>
  
  <p>I add the URL to Grafanas "webhook" and when I click "Test" it only shows me an error. Anyone know the solution? </p>
  
  <p>I have not entered username/password since i don't know what to supply.</p>