Nginx Server Block - After Certbot

Here is an example of a basic Nginx server block, after modification by Certbot.

server {
server_name example.com;
root /var/www/example.com;
index index.html index.htm;

location / {
proxy_pass http://localhost:3000/;
proxy_set_header Host $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-Ssl on; # Optional
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header X-Forwarded-Host $host;
}

listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}
server {
if ($host = example.com) {
return 301 https://$host$request_uri;
} # managed by Certbot

server_name jasonmdx.com;
listen 80;
listen [::]:80;
return 404; # managed by Certbot

}