How to obtain certificate for redirected site

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My domain is:

I ran this command:certbot --nginx

It produced this output:

My web server is (include version): nginx

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

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

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot): latest

I have a domain It redirects to the domain I got from the DDNS provider, for example Nginx uses this name ( to maintain the site. How can I get the certificate for ? When I launch certbot --nginx it suggests to obtain certificate for but I need the certificate for

when you say redirect, I assume cname?

you can write it explicitly, either in nginx or certbot.

certbot --nginx -d

You don’t actually have a redirect. The dot Tk-service you have is based on a HTML <frame> element, provided by the dot-tk service. Therefore, it is impossible for you to get a certificate for with your current setup, because that’s something only dot-tk could do.


read what @Osiris said. you need to handle this with

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