TLS error `SSL_ERROR_BAD_CERT_DOMAIN` on mirrors.jenkins.io and mirrors.jenkins-ci

mirrors.jenkins-ci.org mirrors.jenkins.io

[Final message] The datadog alert on the https call has been removed as this service as never been served as https.

[Initial message] The services mirrors.jenkins-ci.org and mirrors.jenkins.io shows an error SSL_ERROR_BAD_CERT_DOMAIN due to a certificate generated with the wrong name. Only HTTPS (with TLS) access is impacted: plain HTTP is still working as expected.

We are investigating the problem.