#!/bin/bash

[[ -z $2 ]] && echo -e \\n\\tusage: ${0##*/} \<host\> \<port\>\\n && exit 1

host $1
which openssl
openssl version
echo
echo Q | openssl s_client -starttls smtp -servername $1 -connect $1:$2 2>&1 | openssl x509 -noout -text