Michael Curran wrote:
curl: (35) error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol (this is all the further it gets, the client says hello and the server responds with this)
[cut]
The configuration looks correct, what else could I check?
Your curl reports an SSL error, so you're using its native SSL support instead of stunnel client.
Remove all non-essential configuration file options. If you don't understand an option, just leave it at its default instead of using a random value.
Collect stunnel debug logs on both ends. Hopefully this will help you find the solution by yourself, without asking 536 subscribers of this mailing list for help.