Hello ! Here' s what I did : PHP: openssl genrsa -des3 -passout pass:yourpassword -out /root/ispconfig/httpd/conf/ssl.key/server.key2 1024 openssl req -new -passin pass:yourpassword -passout pass:yourpassword -key /root/ispconfig/httpd/conf/ssl.key/server.key2 -out /root/ispconfig/httpd/conf/ssl.csr/server.csr -days 365 openssl req -x509 -passin pass:yourpassword -passout pass:yourpassword -key /root/ispconfig/httpd/conf/ssl.key/server.key2 -in /root/ispconfig/httpd/conf/ssl.csr/server.csr -out /root/ispconfig/httpd/conf/ssl.crt/server.crt -days 365 openssl rsa -passin pass:yourpassword -in /root/ispconfig/httpd/conf/ssl.key/server.key2 -out /root/ispconfig/httpd/conf/ssl.key/server.key chmod 400 /root/ispconfig/httpd/conf/ssl.key/server.key To recreate the server.crt file with correct settings. Bought a cerificate from rapidssl.com, sent them the contents of server.csr, replaced the contents of the server.crt file with the certificate I received in return from rapidssl.com and restarted ispconfig_server. Seems httpd won' t start anymore. Replaced server.crt with a backup I made before, all Ok. What am I missing ? Certificate is intended for the admin pages and webmail.