Hi I use Debian Etch (Debian 4.0) and I install it like it's describe in: http://www.howtoforge.com/perfect_setup_debian_etch and all went perfect, without mistake, and after that I began installing ISPConfig2.2.15, using installation manual http://www.ispconfig.org/manual_installation.htm , and after all check went ok i must fill some things like that (i'll show you what i type): Please enter your MySQL server: localhost Please enter your MySQL user: E.G. root Please enter your MySQL password: mysqlpassword Please enter a name for the ISPConfig database: spconfigdb Please enter the IP address of the ISPConfig web: here I type my real IP address Please enter the host name: www Please enter the domain: www.agromagazin.com Please select the protocol (http or https (SSL encryption)) to use to access the ISPConfig system: If you want to use your control panel with SSL, select 1. You can then access it under https://www.xyz.de:81. If you want to access it under http://www.xyz.de:81, choose 2. - For this , I choose 1, so i will access it under https://....... my "host" file in /etc/host is like this: 127.0.0.1 localhost.localdomain localhost 192.168.0.231 webserver1.aglibra webserver1 # 127.0.0.1 localhost webserver1 # 127.0.1.1 webserver1.aglibra webserver1 # The following lines are desirable for IPv6 capable hosts ::1 ip6-localhost ip6-loopback fe00::0 ip6-localnet ff00::0 ip6-mcastprefix ff02::1 ip6-allnodes ff02::2 ip6-allrouters ff02::3 ip6-allhosts ---------------------------------- After the installation of ISPConfig finished it types me something like you now can log using username:admin, and password:admin But when I type in my browser: https://www.agromagazin.com:81 I receive next error: Could not establish an encrypted connection because certificate presented bywww.agromagazin.com has an invalid signature. So please help me, where is my mistake, and what I must to fix ??? Thank you in advance !!