FreeBSD/letsencrypt/certbot/mail/2019-01-18について、ここに記述してください。
Let’s Encrypt allows subscribers to validate domain control using any one of a few different validation methods. For much of the time Let’s Encrypt has been operating, the options were “DNS-01”, “HTTP-01”, and “TLS-SNI-01”. We recently introduced the “TLS-ALPN-01” method. Today we are announcing that we will end all support for the TLS-SNI-01 validation method on February 13, 2019.
- “DNS-01”, “HTTP-01”に移れ。
**Action is required to prevent your Let's Encrypt certificate renewals from breaking.** Your Let��s Encrypt client used ACME TLS-SNI-01 domain validation to issue a certificate in the past 60 days. TLS-SNI-01 validation is reaching end-of-life and will stop working on **February 13th, 2019.** You need to update your ACME client to use an alternative validation method (HTTP-01, DNS-01 or TLS-ALPN-01) before this date or your certificate renewals will break and existing certificates will start to expire. If you need help updating your ACME client, please open a new topic in the Help category of the Let's Encrypt community forum: https://community.letsencrypt.org/c/help Please answer all of the questions in the topic template so we can help you. For more information about the TLS-SNI-01 end-of-life please see our API announcement: https://community.letsencrypt.org/t/february-13-2019-end-of-life-for-all-tls-sni-01-validation-support/74209 Thank you, Let's Encrypt Staff