I got an ssl certificate from PositiveSSL but problem is i don't know how to set it on my domain. Within email i received 3 files called AddTrustExternalCARoot.crt PositiveSSLCA2.crt www_mydomain_tld.crt But files in mydomain.tld/ssl folder are a bit different. Currently i have self signed certificate generated from ispconfig control panel and files in ssl folder are these: mydomain.tld.crt mydomain.tld.csr mydomain.tld.key mydomain.tld.key.org So i don't know what is what and where to copy what files.