Certificate on domain is working fine - but it fails on subdomain “mail”. On other subdomains it is working fine.
I can reach the .well-known-token in my browser (I disabled cleanup to check).
Thank you for your help.
My domain is: mail.corvinianum.de
I ran this command: (create plesk certificate - plugin)
It produced this output:
Fehler: Fehler bei der Installation des SSL-Zertifikats von Let’s Encrypt: Challenge marked as invalid. Details: Invalid response from http://mail.corvinianum.de/.well-known/acme-challenge/kvWjx4HyaTgEAbhLD95TY1A_fs4UF8e-7LE_O4Lq30c: “<!DOCTYPE HTML PUBLIC “-//IETF//DTD HTML 2.0//EN”>
<title>404 Not Found</title>
My web server is (include version): Apache/2.4.7 (Ubuntu)
The operating system my web server runs on is (include version): Ubuntu 14.04.5 LTS
My hosting provider, if applicable, is: Hosteurope
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 Onyx 17.5.3 Update Nr. 11