I have an app running on Heroku. My app was working good, but today I got an error of “failing” issuing the certificate.
I dismissed all the possible issues in the “troubleshooting” documentation in Heroku. (https://devcenter.heroku.com/articles/automated-certificate-management#troubleshooting)
The last one is to the possibility to have my domain blacklisted. Is there anyway to know if my domain is blacklisted?