Nginx plugin not working

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My domain is:

I ran this command: ./opt/letsencrypt/certbot-auto --nginx

It produced this output: The nginx plugin is not working; there may be problems with your existing configuration. The error was: NoInstallationError()

My web server is (include version): Debian 5

The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:

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

Debian 5? As in Lenny? End-of-life since 2012 :frowning:. I would be very surprised if Certbot could run successfully in this environment.

Could you please run lsb_release -a and show the output?

Could you run with more verbose logging and show the output:

./opt/letsencrypt/certbot-auto -vvv --nginx

No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 5.0.8 (lenny)
Release: 5.0.8
Codename: lenny

I know we used Let’s Encrypt before on this server, but maybe not Certbot??

If you can’t figure out what you used, maybe give a client that has less dependencies a go. It may give you better luck, due to the age of your OS:

Depending on whether you have a newer OpenSSL backported to Lenny or not, you may need to be careful which clients and authorization challenges you use, as SNI may not be available.

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