Java mail use tls 1.2

// add this line mail.smtp.ssl.protocols=TLSv1.2; in properties
// in your Mail Implementation class
props.put("mail.smtp.starttls.enable","true");
props.put("mail.smtp.ssl.protocols","TLSv1.2");

//TO be more specific


Properties prop = new Properties();
prop.setProperty("mail.smtp.auth", "true");
prop.setProperty("mail.smtp.starttls.enable", "true");
prop.setProperty("mail.smtp.ssl.protocols", "TLSv1.2"); // New Line
prop.setProperty("mail.smtp.ssl.trust", mailUri.getHost());
mailSender.setJavaMailProperties(prop);

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