I want to setup OpenVPN server for my personal usage. I own domain and I have valid SSL certificate for this domain (issued by StartSSL).
At the beginning of the setup instructions for OpenVPN there's a section describing generation of my own certificate authority used later to issue self-signed certificates.
I wonder if I can use my existing SSL certificate for that purpose? Do I have any advantages doing that?
For example I used this certificate for mail server SSL and mail clients do not complain about self-signed certificates. Do OpenVPN clients use well known root certificates to check server's certificate or they do not employ this infrastructure and self-signed certificate will work fine?