Error while getting Plesk free ssl

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. |, so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is:

I ran this command: I'm getting an error when buying free ssl from plesk.

It produced this output:Version 18.0.50

My web server is (include version): CentOS Linux 7.9.2009

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 or no, or I don't know): yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): plesk 18.0.50

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

Could not issue an SSL/TLS certificate for

Could not issue a Let's Encrypt SSL/TLS certificate for Authorization for the domain failed.


Invalid response from


Type: urn:ietf:params:acme:error:dns

Status: 400

Detail: DNS problem: SERVFAIL looking up A for - the domain's nameservers may be malfunctioning; DNS problem: SERVFAIL looking up AAAA for - the domain's nameservers may be malfunctioning

your DNS server fails when asked AAAA (not having one is fine for LE, DNS server hang is not.


It actually looks like the nameservers are malfunctioning.

But the short of it is that your domain name needs to work in order to get a certificate, so focus on that first.


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