Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
My domain is: 2test.fe.premiermobility.net
I ran this command: open in browser (Chrome on laptop and mobile, Edge, Samsung Internet browser)
It produced this output:
This server could not prove that it is 2test.fe.premiermobility.net; its security certificate is from premiermobility.default.premiermobility.uk0.bigv.io. This may be caused by a misconfiguration or an attacker intercepting your connection.
My web server is (include version): Apache 2
The operating system my web server runs on is (include version): Debian 8.11 jessie
My hosting provider, if applicable, is: Bytemark
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
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you're using Certbot): n/a (Symbiosis?)
This subdomain has been in use for a couple of years with no problems, but now gives the error message as above. The main domain and other subdomains seem to be OK.
Let's debug gives the following output:
No issues were found with 2test.fe.premiermobility.net. If you are having problems with creating an SSL certificate, please visit the Let's Encrypt Community forums and post a question there.