I have some 'outdated' and 'obsolete crypto' warning in chrome, about their certificate. I am using Chrome 42.0.2311.135 on Windows 7.

Here is the message: https://i.imgur.com/SnMQWU9.png

Compared to HN : https://i.imgur.com/5iphbCq.png

For a 'super secure' email, this sounds strange ? Why are they using an insecure and obsolete key exchange mechanizm ?