I have found the following two sites helpful in finding issues with the configuration of SSL secured web sites

https://www.digicert.com/help/

https://www.ssllabs.com/ssltest/analyze.html

Test which ciphers (TLS, SSL, etc) are enabled

nmap -sV --script ssl-enum-ciphers -p 443 www.yourdomain.com

Ref: https://nmap.org/nsedoc/scripts/ssl-enum-ciphers.html