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From "Henk Penning (JIRA)" <>
Subject [jira] [Created] (INFRA-17959) certbot shouldn't use TLS-SNI-01
Date Tue, 05 Mar 2019 13:04:00 GMT
Henk Penning created INFRA-17959:

             Summary: certbot shouldn't use TLS-SNI-01
                 Key: INFRA-17959
             Project: Infrastructure
          Issue Type: Improvement
          Components: VM
         Environment: mirror-vm.a.o ; possibly others
            Reporter: Henk Penning

Letsencrypt deprecates tls-sni-01 for cert-renewal :

On mirror-vm.a.o certbot(1) is version 0.17.0 ; this article
suggests to upgrade to 0.28 or higher ; then do :
sudo certbot renew --dry-run --preferred-challenges http-01,dns-01

Note that version 0.17.0 [current] can't do "--preferred-challenges http-01,dns-01".

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