• 阿里云ECS服务器无法发送邮件问题解决方案

    这篇文章分享一下自己把项目部署在阿里云ECS上之后，登录邮件提醒时的邮件发送失败问题，无法连接发送邮箱的服务器。

    博主使用的springboot提供的发送邮件服务，如下所示，为了实现异步的效果，新开了一个线程来发送邮件。

    1. package cn.edu.sgu.www.mhxysy.service.system.impl;
    2.  
    3. import cn.edu.sgu.www.mhxysy.property.EmailProperties;
    4. import cn.edu.sgu.www.mhxysy.property.SystemSettingsProperties;
    5. import cn.edu.sgu.www.mhxysy.consts.RedisKeyPrefixConst;
    6. import cn.edu.sgu.www.mhxysy.dto.system.UserLoginDTO;
    7. import cn.edu.sgu.www.mhxysy.dto.system.UserUpdateDTO;
    8. import cn.edu.sgu.www.mhxysy.entity.system.User;
    9. import cn.edu.sgu.www.mhxysy.entity.system.UserLoginLog;
    10. import cn.edu.sgu.www.mhxysy.exception.GlobalException;
    11. import cn.edu.sgu.www.mhxysy.feign.FeignService;
    12. import cn.edu.sgu.www.mhxysy.redis.RedisRepository;
    13. import cn.edu.sgu.www.mhxysy.redis.StringRedisUtils;
    14. import cn.edu.sgu.www.mhxysy.restful.ResponseCode;
    15. import cn.edu.sgu.www.mhxysy.service.system.UserService;
    16. import cn.edu.sgu.www.mhxysy.util.IpUtils;
    17. import cn.edu.sgu.www.mhxysy.util.StringUtils;
    18. import cn.edu.sgu.www.mhxysy.util.UserUtils;
    19. import lombok.extern.slf4j.Slf4j;
    20. import org.apache.shiro.authc.UsernamePasswordToken;
    21. import org.apache.shiro.subject.Subject;
    22. import org.springframework.beans.factory.annotation.Autowired;
    23. import org.springframework.mail.javamail.JavaMailSender;
    24. import org.springframework.mail.javamail.MimeMessageHelper;
    25. import org.springframework.stereotype.Service;
    26.  
    27. import javax.mail.MessagingException;
    28. import javax.mail.internet.MimeMessage;
    29. import java.time.LocalDateTime;
    30. import java.time.format.DateTimeFormatter;
    31.  
    32. /**
    33.  * @author heyunlin
    34.  * @version 1.0
    35.  */
    36. @Slf4j
    37. @Service
    38. public class UserServiceImpl implements UserService {
    39.  
    40. 	private final FeignService feignService;
    41. 	private final JavaMailSender javaMailSender;
    42. 	private final EmailProperties emailProperties;
    43. 	private final RedisRepository redisRepository;
    44. 	private final StringRedisUtils stringRedisUtils;
    45. 	private final SystemSettingsProperties systemSettingsProperties;
    46.  
    47. 	@Autowired
    48. 	public UserServiceImpl(
    49. 			FeignService feignService,
    50. 			JavaMailSender javaMailSender,
    51. 			EmailProperties emailProperties,
    52. 			RedisRepository redisRepository,
    53. 			StringRedisUtils stringRedisUtils,
    54. 			SystemSettingsProperties systemSettingsProperties) {
    55. 		this.feignService = feignService;
    56. 		this.javaMailSender = javaMailSender;
    57. 		this.emailProperties = emailProperties;
    58. 		this.redisRepository = redisRepository;
    59. 		this.stringRedisUtils = stringRedisUtils;
    60. 		this.systemSettingsProperties = systemSettingsProperties;
    61. 	}
    62.  
    63. 	@Override
    64. 	public void logout() {
    65. 		// 删除角色的权限
    66. 		redisRepository.delete(UserUtils.getLoginUsername());
    67.  
    68. 		// 注销
    69. 		UserUtils.getSubject().logout();
    70. 	}
    71.  
    72. 	@Override
    73. 	public void login(UserLoginDTO loginDTO) {
    74. 		// 一、验证码判断
    75. 		// 得到用户输入的验证码
    76. 		String code = loginDTO.getCode();
    77.  
    78. 		// 获取正确的验证码
    79. 		String uuid = loginDTO.getUuid();
    80. 		String key = RedisKeyPrefixConst.PREFIX_CAPTCHA + uuid;
    81. 		String realCode = stringRedisUtils.get(key);
    82.  
    83. 		// 得到的验证码为空，则获取验证码到登录之间的时间已经过了3分钟，验证码过期已经被删除
    84. 		if (realCode == null) {
    85. 			throw new GlobalException(ResponseCode.BAD_REQUEST, "验证码已失效，请刷新页面重新获取~");
    86. 		}
    87. 		// 验证码校验
    88. 		if (!code.equalsIgnoreCase(realCode)) {
    89. 			throw new GlobalException(ResponseCode.BAD_REQUEST, "验证码错误~");
    90. 		}
    91.  
    92. 		// 二、登录流程
    93. 		// 得到用户名
    94. 		String username = loginDTO.getUsername();
    95. 		log.debug("用户{}正在登录...", username);
    96.  
    97. 		// 查询用户信息，如果用户被锁定，提前退出
    98. 		User user = feignService.selectByUsername(username);
    99.  
    100. 		if (user != null) {
    101. 			if (user.getEnable()) {
    102. 				// 1、shiro登录认证
    103. 				UsernamePasswordToken token = new UsernamePasswordToken(username, loginDTO.getPassword());
    104. 				Subject subject = UserUtils.getSubject();
    105.  
    106. 				subject.login(token);
    107. 				// 设置session失效时间：永不超时
    108. 				subject.getSession().setTimeout(-1001);
    109.  
    110. 				// 2、修改管理员上一次登录时间
    111. 				User usr = new User();
    112.  
    113. 				usr.setId(user.getId());
    114. 				usr.setLastLoginTime(LocalDateTime.now());
    115.  
    116. 				feignService.updateById(usr);
    117.  
    118. 				// 3、邮件通知
    119. 				if (emailProperties.isEnable()) {
    120. 					new Thread(() -> {
    121. 						// 定义日期格式
    122. 						DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy年MM月dd日 HH:mm:ss");
    123.  
    124. 						MimeMessage message = javaMailSender.createMimeMessage();
    125. 						MimeMessageHelper helper = new MimeMessageHelper(message);
    126.  
    127. 						try {
    128. 							String text = "您的账号" + username + "在广州登录了。" +
    129. 									"[" + LocalDateTime.now().format(formatter) + "]";
    130.  
    131. 							helper.setFrom(emailProperties.getFrom());
    132. 							helper.setTo(emailProperties.getTo());
    133. 							helper.setText(text);
    134.  
    135. 							javaMailSender.send(message);
    136. 						} catch (MessagingException e) {
    137. 							e.printStackTrace();
    138. 						}
    139. 					}).start();
    140. 				}
    141.  
    142. 				// 4、如果开启了系统日志，添加管理员登录历史
    143. 				if (systemSettingsProperties.isLoginLog()) {
    144. 					UserLoginLog loginLog = new UserLoginLog();
    145.  
    146. 					loginLog.setId(StringUtils.uuid());
    147. 					loginLog.setUserId(user.getId());
    148. 					loginLog.setLoginTime(LocalDateTime.now());
    149. 					loginLog.setLoginIp(IpUtils.getLocalHostAddress());
    150. 					loginLog.setLoginHostName(IpUtils.getLocalHostName());
    151.  
    152. 					feignService.saveLoginLog(loginLog);
    153. 				}
    154.  
    155. 				// 5、从redis中删除用户权限
    156. 				redisRepository.delete(username);
    157.  
    158. 				// 6、查询用户的权限信息，并保存到redis
    159. 				redisRepository.save(username);
    160. 			} else {
    161. 				throw new GlobalException(ResponseCode.FORBIDDEN, "账号已被锁定，禁止登录！");
    162. 			}
    163. 		} else {
    164. 			throw new GlobalException(ResponseCode.NOT_FOUND, "用户名不存在~");
    165. 		}
    166. 	}
    167.  
    168. 	@Override
    169. 	public void updatePass(UserUpdateDTO userUpdateDTO) {
    170. 		feignService.updatePass(userUpdateDTO);
    171. 	}
    172.  
    173. }

    过了一段时间之后，后台打印出了连接邮箱服务器超时的日志。 

    1. Exception in thread "Thread-25" org.springframework.mail.MailSendException: Mail server connection failed; nested exception is com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.163.com, 25; timeout -1;
    3.   nested exception is:
    5. 	java.net.ConnectException: Connection timed out (Connection timed out). Failed messages: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.163.com, 25; timeout -1;
    6.  
    7.   nested exception is:
    8.  
    9. 	java.net.ConnectException: Connection timed out (Connection timed out); message exception details (1) are:
    10.  
    11. Failed message 1:
    12.  
    13. com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.163.com, 25; timeout -1;
    15.   nested exception is:
    17. 	java.net.ConnectException: Connection timed out (Connection timed out)
    19. 	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2210)
    21. 	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:722)
    23. 	at javax.mail.Service.connect(Service.java:342)
    25. 	at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:518)
    27. 	at org.springframework.mail.javamail.JavaMailSenderImpl.doSend(JavaMailSenderImpl.java:437)
    29. 	at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:361)
    31. 	at org.springframework.mail.javamail.JavaMailSenderImpl.send(JavaMailSenderImpl.java:356)
    33. 	at cn.edu.sgu.www.mhxysy.service.system.impl.UserServiceImpl.lambda$login$0(UserServiceImpl.java:135)
    35. 	at java.lang.Thread.run(Thread.java:745)
    37. Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
    39. 	at java.net.PlainSocketImpl.socketConnect(Native Method)
    41. 	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    43. 	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    45. 	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    47. 	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    49. 	at java.net.Socket.connect(Socket.java:589)
    51. 	at java.net.Socket.connect(Socket.java:538)
    53. 	at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:335)
    55. 	at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:214)
    57. 	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2160)
    59. 	... 8 more

    原因是：Couldn't connect to host, port: smtp.163.com, 25

    但是通过终端连接smtp.163.com是成功的

    ping smtp.163.com

    但是尝试访问25端口，却无响应

    telnet smtp.163.com 25

    于是在网上查找了一些解决方案，最后采用了通过ssl连接的方式，在原来的邮件设置中加入以下设置

    1. spring:
    2.   mail:
    3.     port: 25
    4.     host: smtp.163.com
    5.     default-encoding: UTF-8
    6.     username: xxxxx@163.com
    7.     password: xxxxxxxxxxxxx
    8.  
    9.     # 以下是新增的设置
    10.     properties:
    11.       mail:
    12.         debug: true
    13.         smtp:
    14.           auth: true
    15.           ssl:
    16.             trust: smtp.163.com
    17.           starttls:
    18.             enable: true
    19.             required: true
    20.           socketFactory:
    21.             port: 465
    22.             class: javax.net.ssl.SSLSocketFactory

    最后重启服务，登陆的时候成功发出了邮件。

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  • 原文地址：https://blog.csdn.net/heyl163_/article/details/133468627