Using Centos 6.3 32 Bit and on upgrade or clean install get: nginx: [emerg] invalid value "ssl" in "ssl" directive, it must be "on" or "off" in /etc/nginx/sites-enabled/000-ispconfig.vhost:3 nginx: configuration file /etc/nginx/nginx.conf test failed Fault is in /etc/nginx/sites-enabled/000-ispconfig.vhost where line 3 reads as server { listen 8080; ssl ssl; ssl_certificate /usr/local/ispconfig/interface/ssl/ispserver.crt; ssl_certificate_key /usr/local/ispconfig/interface/ssl/ispserver.key; whereas it should be ssl on; or ssl off; if not using ssl for panel server { listen 8080; ssl on; ssl_certificate /usr/local/ispconfig/interface/ssl/ispserver.crt; ssl_certificate_key /usr/local/ispconfig/interface/ssl/ispserver.key;
