Can’t figure out why this certificate fail.
Double check IP address (54.36.18.58) -> OK.
Many other domain on this server runs with let’s Encrypt certificate without any problem.
It produced this output:
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for alalandaise.nl
http-01 challenge for www.alalandaise.nl
Waiting for verification…
Cleaning up challenges
Failed authorization procedure. alalandaise.nl (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: The key authorization file from the server did not match this challenge [EdWOXvNFfdnWLPW4Rmqw462ShSZnavS2GcD1856hEyg.C3AC-dhg29SObLyYxTyk3Em-sLYrnZ7BC0-0cdLzVQQ] != [EdWOXvNFfdnWLPW4Rmqw462ShSZnavS2GcD1856hEyg.4E3VCTFsySjUrqnCg0ooULx-3kbdPBygi0aWkvg5Gd8], www.alalandaise.nl (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: The key authorization file from the server did not match this challenge [b9xHFGfhby7Ov6S6HMddQnI_hvpg2HK0iwNXUXe451s.C3AC-dhg29SObLyYxTyk3Em-sLYrnZ7BC0-0cdLzVQQ] != [b9xHFGfhby7Ov6S6HMddQnI_hvpg2HK0iwNXUXe451s.4E3VCTFsySjUrqnCg0ooULx-3kbdPBygi0aWkvg5Gd8]
IMPORTANT NOTES:
The following errors were reported by the server:
Domain: alalandaise.nl
Type: unauthorized
Detail: The key authorization file from the server did not match
this challenge
[EdWOXvNFfdnWLPW4Rmqw462ShSZnavS2GcD1856hEyg.C3AC-dhg29SObLyYxTyk3Em-sLYrnZ7BC0-0cdLzVQQ]
!=
[EdWOXvNFfdnWLPW4Rmqw462ShSZnavS2GcD1856hEyg.4E3VCTFsySjUrqnCg0ooULx-3kbdPBygi0aWkvg5Gd8]
Domain: www.alalandaise.nl
Type: unauthorized
Detail: The key authorization file from the server did not match
this challenge
[b9xHFGfhby7Ov6S6HMddQnI_hvpg2HK0iwNXUXe451s.C3AC-dhg29SObLyYxTyk3Em-sLYrnZ7BC0-0cdLzVQQ]
!=
[b9xHFGfhby7Ov6S6HMddQnI_hvpg2HK0iwNXUXe451s.4E3VCTFsySjUrqnCg0ooULx-3kbdPBygi0aWkvg5Gd8]
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): apache 2.4.25
The operating system my web server runs on is (include version): Debian 9.1
My hosting provider, if applicable, is: OVH
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): NO
As Let’s Encrypt prefers IPv6 over IPv4 it is not getting the right challenge from your domain. You should review your IPv6 server/apache conf or remove the AAAA record for alalandaise.nl and www.alalandaise.nl.