SpringMvc使用JavaMail发送邮件,并使用465端口开启ssl加密传输，保证邮件安全

代码在本地发邮件没任何问题。但部署到服务器，发送邮件显示连接异常。一开始非常懵逼，之后telnet smtp.163.com 25不通，发现是云服务器出于安全考虑，关闭了服务器的25端口，而25端口是smtp的默认端口。之后telnet smtp.163.com 465能通（邮件服务商的加密的465端口）。

1、POM文件配置：

<dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>4.1.6.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.7</version>
        </dependency>
 </dependencies>

2、spring 配置：

<!-- 邮箱配置 -->
	 <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="smtp.163.com" />
        <property name="username" value="********" />
        <property name="password" value="********" />
        <property name="port" value="465" />  

        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.smtp.timeout">50000</prop>
                <prop key="mail.smtp.starttls.enable">true</prop>
                <!-- <prop key="mail.debug">true</prop> -->
                <prop key="mail.smtp.socketFactory.port">465</prop>
                <prop key="mail.smtp.socketFactory.class">javax.net.ssl.SSLSocketFactory</prop>
                <prop key="mail.smtp.socketFactory.fallback">false</prop>
            </props>
        </property>
    </bean>

　3、代码实例：

/**
* 组织邮件信息并发送邮件
*
* @param toAddress
* @param fromAddress
* @param subject
* @param htmlBody
* @throws MessagingException
 */
public void sendHtmlEmail(String toAddress, String fromAddress, String subject, String htmlBody)
			throws MessagingException {
	MimeMessage message = mailSender.createMimeMessage();
	MimeMessageHelper helper = new MimeMessageHelper(message, "UTF-8");
	helper.setTo(toAddress);
	helper.setFrom(fromAddress);
	helper.setText(htmlBody, true);
	helper.setSubject(subject);
	mailSender.send(message);
}

this.sendHtmlEmail("18753377533@163.com", "sender@163.com", "找回您的账户密码", emailContent);

　　https://www.cnblogs.com/dixinyunpan/p/6041278.html

https://blog.csdn.net/yuruixin_china/article/details/73276390