server {
    listen 80;
    listen [::]:80;
    server_name mai.example.com;

    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    server_name mai.example.com;

    ssl_certificate /path/to/fullchain.pem;
    ssl_certificate_key /path/to/privkey.pem;
    
    location / {
        proxy_set_header X-Forwarded-For $remote_addr;
        proxy_pass http://localhost:5000;
    }
}