STARTTLS cannot be enforced. It will be used automatically if the mail server supports it. The encryption type should be takım to ‘None/STARTTLS’ in this case. See here for an example on how to configure self signed certificates. Nisan 2022'bile WhatsApp, paylaşılan bir alanda takkadak fazla küme sohbetinin var olmasına, https://www.metooo.it/u/6874973bf9f24c38a01ae47c