March 13, 2018, Let’s Encrypt Wildcard certificate support is live.

How to use it? Follow me.

git clone https://github.com/certbot/certbot.git
./certbot-auto certonly --manual -d *.example.com --agree-tos --manual-public-ip-logging-ok --preferred-challenges dns-01 --server https://acme-v02.api.letsencrypt.org/directory

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