STARTTLS cannot be enforced. It will be used automatically if the andıran server supports it. The encryption type should be set to ‘None/STARTTLS’ in this case. See here for an example on how to configure self signed certificates. 9. When enabled, you emanet also choose to display the Secure Eğri https://www.metooo.es/u/687430567e32a6284bfbe9af