server {
    listen 443 ssl;
    server_name mail.{YOURDOMAIN.COM};

    ssl_certificate /etc/letsencrypt/live/mail.{YOURDOMAIN.COM}/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/mail.{YOURDOMAIN.COM}/privkey.pem;


    location / {
        proxy_pass http://127.0.0.1:7071;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

    sub_filter_once off;
    sub_filter '</head>' '<link rel="stylesheet" href="/custom.css"></head>';


    }

# custom theming stuff
#    location /background.jpg {
#       alias /var/www/html/nginx/background.jpg;
#       add_header Access-Control-Allow-Origin *;
#    }


#    location /custom.css {
#       alias /var/www/html/nginx/custom_mailu.css;
#       default_type text/css;
#       add_header Access-Control-Allow-Origin *;
#}
}