bin/rumble in rumble-0.5.2 vs bin/rumble in rumble-0.5.3

@@ -107,19 +107,21 @@
           proxy_address: "#{scheme}://#{host}",
           proxy_port: port.to_i,
           authentication: 'plain',
           openssl_verify_mode: OpenSSL::SSL::VERIFY_NONE,
           enable_starttls_auto: true,
+          enable_starttls: true,
           user_name: opts[:user],
           password: opts[:password]
         }
       else
         delivery_method :smtp, {
           domain: from.domain,
           address: opts[:host],
           port: opts[:port],
           user_name: opts[:user],
           password: opts[:password],
+          enable_starttls: true,
           enable_starttls_auto: true
         }
       end
     else
       raise "Delivery method #{opts[:method]} is not supported"