403 unauthorized

Hello everyone,

I come to you because I am trying to set up my certificate on a client's domain, the renewal has been working for 2 years without problem, but there it is impossible to renew the certificate, I have the following message displayed :

Message : issue: HTTP 403 urn:ietf:params:acme:error:unauthorized - Invalid response from https://mail.menisol.fr/.well-known/acme-challenge/NusA-0-b58GyOXWmxSKZ6d8lLMCQ_xtrvpXX909siLA: 404

My domain is: https://menisol.fr/
My hosting provider, if applicable, is: planethoster

thank you in advance for your expertise

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The error message is for the mail.menisol.fr domain. But, your prior certs have only been for menisol.fr and www.menisol.fr. It is fine to add another domain name to your cert. But, is your server configured to handle the HTTP challenge request for the mail subdomain?


Hello MikeMcQ,

Thanks for the analysis, I only have the website on the server. (Emails being managed elsewhere)

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Then check how you requested the cert. Some how you asked for the mail subdomain to be included in your cert.



With this modification everything works again.

Thank you so much


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