I have a domain with four subdomains. I use letsencrypt every 3 months to automatically renew the certificates. This time however, one of the four subdomains (“support.spider-e.com”) is causing errors. The other three have renewed without any problem.
Only ‘support’ is giving me any trouble.
I have manually checked the .conf files and checked the file permissions for all of the subdomains, and cannot find any difference. I also used nslookup to check that the name resolves to the correct IP address.
My domain is:
I ran this command:
and / or
It produced this output:
Plugins selected: Authenticator apache, Installer apache
Which names would you like to activate HTTPS for?
Select the appropriate numbers separated by commas and/or spaces, or leave input
blank to select all options shown (Enter ‘c’ to cancel): 3
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for support.spider-e.com
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. support.spider-e.com (http-01): urn:ietf:params:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://support.spider-e.com/.well-known/acme-challenge/0D-r0ICaEYUzSMNgokSBSByTWnhC4xP9wwhTVTKDa2Q: “<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>\n<html><head>\n<title>404 Not Found</title>\n</head><body>\n<h1>Not Found</h1>\n<p”
- The following errors were reported by the server:
Detail: Invalid response from
“<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML
To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address.
My web server is (include version):
The operating system my web server runs on is (include version):
Linux IS-28868 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
My hosting provider, if applicable, is:
I can login to a root shell on my machine (yes or no, or I don’t know):
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
Any ideas what to check next?