Cannot issue wildcard Let's Encrypt certificate in Plesk: DNS problem: NXDOMAIN looking up TXT for _acme-challenge.example.com

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    Alex Laforge

    Having to specifiy the TXT content on the external Name Server each time a renew is required is absolutely impossible, too long, so not a solution.

    We definitely NEED an option in Plesk Obsidian Windows to be able to choose if :

    - Option A : Plesk Let's Encrypt extension will use the method of adding a TXT record in the Plesk DNS Zone

    - Option B : Plesk Let's Encrypt extension will use the method of creating a /.well-known/ file under the domain root. This option will be useful for all the people not using Plesk as their Name Server.

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    Lev Iurev

    @Alex Laforge As I can see it was figured out in the ticket.

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    Alex Laforge

    Yes, your technical support solved the situation. In fact, for those who come to this page, you must know that, to issue certificates, Let's Encrypt servers use two types of challenges:

    • HTTP-01 for issuing regular certificates - the token is checked at the URL http://<YOUR_DOMAIN>/.well-known/acme-challenge/<TOKEN>.
    • DNS-01 for issuing wildcard certificates - the token is checked in the DNS TXT record _acme-challenge.<YOUR_DOMAIN>.

    More information are available at this page https://letsencrypt.org/docs/challenge-types/

    I wish that this information would be more clearly displayed inside Plesk, or on the SSL-related Plesk Documentation pages.

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