Error in generating ssl in node.js

I tried to generate a SSL cert for my domain: 2-hosts.com with node.js.

I have verified the domain is working with the IP I assigned and also I could access the challenge file without a problem with a browser, but when I used certbot certonly --manual to try to generate the SSL files, it returned the following errors:

“Failed authorization procedure. 2-hosts.com (http-01): urn:ietf:params:acme:error:dns :: DNS problem: SERVFAIL looking up A for 2-hosts.com - the domain’s nameservers may be malfunctioning”

Can anyone help, thanks!

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Hi @proson

there is a check of your domain, ~~25 minutes old - https://check-your-website.server-daten.de/?q=2-hosts.com

There you see the problem:

X Fatal error: Nameserver doesn’t support echo capitalization: now1.dns.com
X Fatal error: Nameserver doesn’t support echo capitalization: now1.dns.com / 119.167.180.143
X Fatal error: Nameserver doesn’t support echo capitalization: now1.dns.com / 218.98.111.138
X Fatal error: Nameserver doesn’t support echo capitalization: now1.dns.com / 27.152.186.202
X Fatal error: Nameserver doesn’t support echo capitalization: now2.dns.com / 121.12.104.75
X Fatal error: Nameserver doesn’t support echo capitalization: now2.dns.com / 42.157.225.206

Your name servers are buggy. If there is a query 2-HoStS.cOm, your name servers answers with 2-hosts.com, that’s wrong.

Name servers must answer with the exact query.

Read

https://tools.ietf.org/html/draft-vixie-dnsext-dns0x20-00

If you can’t change your name servers, that’s bad.

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