Unable to issue Let's Encrypt certificate in Plesk: "Connection refused" or "Error getting validation data" or "Connection reset by peer"



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    Pieter van Kampen

    Having rules like those is not why I took Plesk. Anyway, I manged to execute them. The instructions do not mention that you need to install iptables first.

    After that, I managed to execute these rules, but the error when trying to create a certificate remains the same. The only workaround is to remove ipv6 assignment in the domain hostsettings, and the AAAA record from the DNS service. 

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