dear Till, I have one more question, on my new configured ISPConfig server I find that ISPConfig and phpmyadmin dont use signed certificate for ISPConfig and phpmyadmin. How can I manually add certificate for this domain and subdomain for ISPConfig and phpmyadmin will use this signed certificate and will not broke the automatic certificate autorenew system? or for renew certificates will need some cron command ? Without certificate is not secure use phpmyadmin and ISPConfig that if leasten communication with server can find our used passwords for ISPConfig and phpmyAdmin for hack our system. So its very important for use secure communication with correct certificates. Thank you in advance, with best regards Artur G.