My domain is:
www.cqkty.com
It produced this output:
DNS problem: SERVFAIL looking up A for www.cqkty.com
My web server is (include version):
nginx
The operating system my web server runs on is (include version):
centos6.0
I can login to a root shell on my machine (yes or no, or I don’t know):
no
Hi @patricelee
your nameservers are bad.
Comments
| A | name “cqkty.com” is domain, public suffix is “com” |
|---|---|
| A | good: All ip addresses are public addresses |
| A | good - only one version with Http-Status 200 |
| H | fatal error: No https - result with http-status 200, no encryption |
| H | fatal error: http result with http-status 200, no encryption |
| X | Fatal error: Nameserver doesn’t support TCP connections. May be a problem ordering a Letsencrypt certificate.: 2 Nameserver without support |
| X | Fatal error: Nameserver doesn’t support echo capitalization: 1 Nameserver without support |
| X | Nameserver Timeout checking Echo Capitalization: 1 Nameserver with timeout |
| X | Fatal error: Nameserver doesn’t support EDNS with max. 512 Byte Udp payload or sends more then 512 Bytes: 1 Nameserver without support |
| X | Nameserver Timeout checking EDNS512: 1 Nameserver without support |
They have timeouts, don’t support TCP, random capitalization and EDNS.
https://check-your-website.server-daten.de/?q=cqkty.com found an ip address. But only by querying the system nameservers (cached entries).
Is it possible that you change your nameservers?
Normally, your domain registrar manages your nameservers and is the hoster of your webspace.
So it’s first a question of your hosting.