I'm trying to authenticate with an external webservice in an apex class using a callout, and I'm getting this callout exception: "System.CalloutException: Received fatal alert: handshake_failure".  I can make the call using REST Console on my chrome browser.  Sending a POST HttpRequest to the following path:
https://{server}/auth?username={username}&password={password}

This should return json containing a sessionId, but when I execute this request i get the CalloutException.  I've registered the server in the remote sites in my SFDC instance.  I'm not sure why i'm getting this handshake failure.

Help!!!!!!

I'm trying to authenticate with an external webservice in an apex class using a callout, and I'm getting this callout exception: "System.CalloutException: Received fatal alert: handshake_failure".  I can make the call using REST Console on my chrome browser.  Sending a POST HttpRequest to the following path:
https://{server}/auth?username={username}&password={password}

This should return json containing a sessionId, but when I execute this request i get the CalloutException.  I've registered the server in the remote sites in my SFDC instance.  I'm not sure why i'm getting this handshake failure.

Help!!!!!!