I don’t want to create additional noise on top of the current security issue but my understanding is that the http-01 challenge is supposed to work normally? If so then I don’t know what to do anymore. My domain is: sittenkammer.de My web server is: apache2 [2.4.10-10+deb8u11] (also tested on ngin…

Hi @arsylum , Your domain advertises IPv4 and IPv6 addresses, Let’s Encrypt prefers IPv6 over IPv4 so it tries to validate your domain using the IPv6 address but you have a redirection that Let’s Encrypt won’t follow. So, trying to reach the challenge using IPv4 it works, no problem: $ curl -ikL4 …

Error getting validation data (status 400)

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system Closed February 12, 2018, 8:00pm 12

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Error getting validation data (status 400)

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