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Let's Encrypt specifically does not rate limit renewals. See the renewal exemption in the 6th paragraph of [0]. A "renewal" is any certificate that would count

Let's Encrypt specifically does not rate limit renewals. See the renewal exemption in the 6th paragraph of [0]. A "renewal" is any certificate that would count as a duplicate – that is, using the same set of names as another valid certificate. It doesn't count the keys. So you can always reissue existing certs. [0] https://letsencrypt.org/docs/rate-limits/ https://letsencrypt.org/docs/rate-limits/

schoen 8y ago
Also, since last week, recent renewals won't count against your new issuance rate limits. https://community.letsencrypt.org/t/rate-limits-fixing-certs-per-name-rate-limit-order-of-operations-gotcha/88189 https://community.letsencrypt.org/t/rate-limits-fixing-certs...