Pebble acme-tls/1 failed to connect on challenge, Jetty shows connections

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No, one needs to be using TLS v1.2 or TLS v1.3; here are 3 posts on the subject.

  1. Rejecting SHA-1 CSRs and validation using TLS 1.0 / 1.1 URLs
  2. Email feedback: TLS 1.0/1.1 deprecation and SHA-1 deprecation
  3. Questions about TLS 1.0 / 1.1 deprecation for ACME requests
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