STARTTLS Cannot be enforced. It will be used automatically if the benzeyen 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. Indexes of website links allow Google and other search engines to return https://www.saludcapital.gov.co/sitios/VigilanciaSaludPublica/Lists/Contactenos/DispForm.aspx?ID=2972663