I have the newest version of ISP (3.1.1.p1) with apache2, postfix, dovecot, mysql. I would like to buy and install SSL certificate (at the moment) on one domain. In the future probably I would like to buy other certificates. So question is - how many SSL Certificates can I install on the Ubuntu Server under ISPConfig? I asked few companies which sell certificates and they answered me that depends from hosting. But how can I check this (it dependes from what)?