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by jabbany 1683 days ago
Let's Encrypt also allows you to do DNS based validation (DNS-01) where you just set a TXT record on the domain and update it from time to time.

The acme.sh script actually supports quite a few providers so you can cron it up and never even have to run an out-facing HTTP server. Useful for if say your ISP blocks port 80 or if you're behind a NAT you cannot control.