title: Sendgrid brand link with nginx proxy
body: <p>We try to set a brand link with custom ssl with this doc <a href="https://sendgrid.com/docs/ui/account-and-settings/custom-ssl-configurations/" rel="nofollow noreferrer">https://sendgrid.com/docs/ui/account-and-settings/custom-ssl-configurations/</a>.</p>
  
  <p>We follow it, and now we have a proxy, with certificat, and that's redirect to sendgrid.net.</p>
  
  <p>Support tell us that their test say "FAIL: We did not get a 200 response back from the test 'https' click tracking link." And tell us also that certificat wildcard on proxy is not supported. </p>
  
  <p>I don't understand the wildcard reason, and the proxy send not a 200, because sendgrid.net send a 404</p>
  
  <p>So I don't understand what to do.</p>
  
  <p>We use nginx and this example to implement our proxy : <a href="https://gist.github.com/jjhiew/cbbd26da313fc550467e303a6c6f8177" rel="nofollow noreferrer">https://gist.github.com/jjhiew/cbbd26da313fc550467e303a6c6f8177</a></p>