Hi,

Is there any tool to let me know which protocol stunnel is advertising ?

Something like we do for HTTPS connections, but for POP3S/IMAPS/SMTPS.

openssl s_client -connect microsoft.com:443

Maybe this is possible with openssl also, if so anyone know how?

I want to know if it has SSL, TLS, and which TLS version.

Thanks in advanced,

Jorge Bastos