即使我将端口号设置为2587获取错误无法连接到SMTP主机：email-smtp.eu-west-1.amazonaws.com，端口：25

Question

static final String HOST =＆＃34; email-smtp.eu-west-1.amazonaws.com＆＃34 ;; static final int PORT = 2587;

private static Properties getProperties() {


    Properties props = new Properties();
    props.put("mail.smtp.auth", "true");
    props.put("mail.smtp.starttls.enable","true");
    props.put("mail.smtp.host", HOST);
    props.put("mail.smtp.port", PORT); 

}