I've seen a couple previous posts on this, but can't find an official answer anywhere. Once a DNS challenge is successful is there a period of time where that response is cached for subsequent challenges, or will a new response be necessary every time? Related topic: [image] DNS ch…

Hi @derak ! Once successfully completed, an authorization is cached for 30 days as long as subsequent requests use the same ACME account key. This is officially documented here: https://letsencrypt.org/docs/faq/#i-successfully-renewed-a-certificate-but-validation-didnt-happen-this-time---how-is-th…

DNS Challenge Caching

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mnordhoff January 7, 2018, 2:19am 3

Note that the limit may get shorter in the future, e.g. 7 days.

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DNS Challenge Caching

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