thanks its installed, it does not load from the panel and by default it seems to of allowed quickbox and it asked for an email on setup.
Yes, the email is from installing sendmail. It adds your email that you entered to the aliases file. So any alerts etc that occur will be delivered to said email. As per it not loading up, this is more than likely an issue with the SSL certificate.
Check out this awesome post by @SavageCore. It explains how to add your Lets Encrypt certificate to CSF for secure GUI entry. If you don’t have a domain and need one (assuming you’re using a new IP as you’re already in our system), shoot me a PM with your server details and I will add you to the QuickBox DNS, i.e; YOURDOMAIN.quickbox.io