Error: Let's Encrypt validation status 400

[milnerjames]

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: mailtonumb.site

I ran this command: v-add-letsencrypt-domain admin mailtonumb.site

It produced this output: Error: Let's Encrypt validation status 400

My web server is (include version): OS: CentOS 7 (64 Bit

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes

I'm using a control panel to manage my site (Vesta Web control panel):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):

[rg305]

Hi @milnerjames, and welcome to the LE community forum

Which ACME client does VESTA use?

Please show the output of:
nginx -T

[Bruce5051]

Hello @milnerjames,

You are serving a certificate here https://decoder.link/sslchecker/www.mailtonumb.site/443 that only has the Domain Name mailtonumb.site in the SANs, however your DNS in addition has A Record for www.mailtonumb.site and that name is not on certificate being served.