Webhook Error: SSL: Certificate Subject Name Does Not Match Target Host Name


The webhook error type "The remote server's SSL certificate or SSH fingerprint was rejected" occurs when the SSL certificate is being used on the main domain and not Sub-domains.




  1. Check the URL in Admin > Webhooks
  2. Click on the webhook in the right corner.
  3. For example, if the URL is, https://onlineservices.test.marketo.com, the certificate needs to be valid on *.test.marketo.com and not just *.Marketo.com.
  4. Check this by verifying the certificate on "https://www.sslshopper.com" and all the certificates will be listed as Subject Alternative Name's if the certificate is valid on the sub-domains.

For example:

For Google.com "https://www.sslshopper.com/ssl-checker.html#hostname=google.com", the certificate is valid on *.Google.com as well as all the subdomains as listed in SAN's.



Labels (1)