How to generate a Letsencrypt certificate for the DirectAdmin server hostname

With Let's Encrypt you can generate a free SSL certificate for your whole server: SMTP, POP3, IMAP, FTP, the webserver(s) and DirectAdmin is covered by this. First, you need to have Let's Encrypt enabled. Secondly, this only works for the server hostname.

1. Navigate to the directory:
   cd /usr/local/directadmin/scripts
2. Request the certificate:
   sh letsencrypt request servername.yourwebhoster.eu
3. Make sure that the following services are restarted, if installed:
   1. apache
   2. exim
   3. dovecot
   4. proftpd
   5. pureftpd
   6. nginx
4. DirectAdmin will take care of regenerating the Let's Encrypt certificate.