SSL Certificate for Internal server

[letsencryptprakash]

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: stldintux02.sial.com

I ran this command: sudo docker run -it --rm
-v /docker-volumes/etc/letsencrypt:/etc/letsencrypt
-v /docker-volumes/var/lib/letsencrypt:/var/lib/letsencrypt
-v /docker/letsencrypt-docker-nginx/src/letsencrypt/letsencrypt-site:/data/letsencrypt
-v “/docker-volumes/var/log/letsencrypt:/var/log/letsencrypt”
certbot/certbot
certonly --webroot
–register-unsafely-without-email --agree-tos
–webroot-path=/data/letsencrypt
–staging
-d stldintux02.sial.com -d www.stldintux02.sial.com

It produced this output:

Requesting Let’s Encrypt certificate for stldintux02.sial.com …

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator webroot, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for stldintux02.sial.com
http-01 challenge for www.stldintux02.sial.com
Using the webroot path /var/www/certbot for all unmatched domains.
Waiting for verification…
Challenge failed for domain stldintux02.sial.com
Challenge failed for domain www.stldintux02.sial.com
http-01 challenge for stldintux02.sial.com
http-01 challenge for www.stldintux02.sial.com
Cleaning up challenges
Some challenges have failed.

IMPORTANT NOTES:

• The following errors were reported by the server:Domain: stldintux02.sial.com
  Type: dns
  Detail: DNS problem: NXDOMAIN looking up A for stldintux02.sial.com
  • check that a DNS record exists for this domainDomain: www.stldintux02.sial.com
    Type: dns
    Detail: DNS problem: NXDOMAIN looking up A for
    www.stldintux02.sial.com - check that a DNS record exists for this
    domain

My web server is (include version):

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):

I’m using a control panel to manage my site (no, or provide the name and version of the control panel):

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

Hello LetsEncrypt,

stldintux02.sial.com this is my internal servers and i want to generate the Certificate for this, could some one please help me to generate the certificate on this.

Thanks