title: 阿里云服务器坑之邮件无法发送 tags:

• ecs
• 25
• email
• mail
• 邮件发送失败 categories: 工作日志 date: 2017-12-14 10:10:38

背景

随着F6规模的扩大 系统也是越做越多&＃xff01;最近也上了保险项目。出于部分机器分配考虑 ‘临时’将保险项目放置在jenkins服务器上【jenkins服务器是最新申请的机器】

由于放置在jenkins服务器上导致的问题 小伙伴可以阅读上一篇Jenkins小坑之执行Shell

本篇需要来说明一下关于邮件发送的坑&＃xff01;

问题

保险项目上线后 发现线上错误不会发送错误邮件 当时同期毕业的报表项目可以成功发送邮件&＃xff01;

由于我们目前使用QQ企业邮箱发送邮件 会发生发送频率过高导致被邮件发不出来。但是事实证明并没有&＃xff01;

于是调查logback的配置

<springProperty scope&＃61;"context" name&＃61;"myAppName" source&＃61;"spring.application.name"defaultValue&＃61;"zeus"/><springProperty scope&＃61;"context" name&＃61;"email.username" source&＃61;"logging.email.username"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.password" source&＃61;"logging.email.password"defaultValue&＃61;"***"/><springProperty scope&＃61;"context" name&＃61;"email.from" source&＃61;"logging.email.from"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.to" source&＃61;"logging.email.to"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.subject" source&＃61;"logging.email.subject"defaultValue&＃61;"ZEUS-NOTICE-DEV-%m{30}"/><springProperty scope&＃61;"context" name&＃61;"email.smtp.host" source&＃61;"logging.email.smtp.host"defaultValue&＃61;"smtp.exmail.qq.com"/><springProperty scope&＃61;"context" name&＃61;"email.pattern" source&＃61;"logging.email.pattern"defaultValue&＃61;"%d [%level] [%thread] %logger{15}:%line %msg%n"/><springProperty scope&＃61;"context" name&＃61;"email.filter" source&＃61;"logging.email.ThresholdFilter"defaultValue&＃61;"ERROR"/><appender name&＃61;"MAIL" class&＃61;"ch.qos.logback.classic.net.SMTPAppender"><To>${email.to}To><username>${email.username}username><subject>${email.subject}subject><from>${email.from}from><Name>${email.smtp.host}Name><password>${email.password}password><SMTPHost>${email.smtp.host}SMTPHost><layout class&＃61;"ch.qos.logback.classic.PatternLayout"><pattern>${email.pattern}pattern>layout><filter class&＃61;"ch.qos.logback.classic.filter.ThresholdFilter"><level>${email.filter}level>filter>appender>


上述配置由于不同机器和环境会从springboot不同的profile读取

但是现状是测试环境均可以发送 但是生产环境无法发送&＃xff01;

调查

1. 首先考虑对应阿里云机器的网络

PING smtp.exmail.qq.com (163.177.72.143) 56(84) bytes of data.64 bytes from 163.177.72.143 (163.177.72.143): icmp_seq&＃61;1 ttl&＃61;50 time&＃61;34.1 ms64 bytes from 163.177.72.143 (163.177.72.143): icmp_seq&＃61;2 ttl&＃61;50 time&＃61;34.3 ms64 bytes from 163.177.72.143 (163.177.72.143): icmp_seq&＃61;3 ttl&＃61;50 time&＃61;34.2 ms^C--- smtp.exmail.qq.com ping statistics ---3 packets transmitted, 3 received, 0% packet loss, time 2002ms


 


2. 证实网络是通的 同时由于该台服务器是jenkins服务器【由运维人员配置过jenkins发送邮件功能 可以成功发送邮件】
3. 网络没有问题 那么有否可能端口被封呢&＃xff1f;但是jenkins服务器可以发送邮件有如何解释&＃xff1f;调查陷入了僵局
4. 于是找到jenkins管理员账号查看邮箱设定

5. 发现jenkins配置制定了端口号 但是我们的配置中没有端口号的指定
6. 那么默认的端口号是啥呢&＃xff1f;

public abstract class SMTPAppenderBase<E> extends AppenderBase<E> {static InternetAddress[] EMPTY_IA_ARRAY &＃61; new InternetAddress[0];// ~ 14 daysstatic final long MAX_DELAY_BETWEEN_STATUS_MESSAGES &＃61; 1228800 * CoreConstants.MILLIS_IN_ONE_SECOND;long lastTrackerStatusPrint &＃61; 0;long delayBetweenStatusMessages &＃61; 300 * CoreConstants.MILLIS_IN_ONE_SECOND;protected Layout subjectLayout;protected Layout layout;private List> toPatternLayoutList &＃61; new ArrayList>();private String from;private String subjectStr &＃61; null;private String smtpHost;private int smtpPort &＃61; 25;private boolean starttls &＃61; false;private boolean ssl &＃61; false;private boolean sessionViaJNDI &＃61; false;private String jndiLocation &＃61; CoreConstants.JNDI_COMP_PREFIX &＃43; "/mail/Session";String username;String password;String localhost;boolean asynchronousSending &＃61; true;private String charsetEncoding &＃61; "UTF-8";protected Session session;protected EventEvaluator eventEvaluator;protected Discriminator discriminator &＃61; new DefaultDiscriminator();protected CyclicBufferTracker cbTracker;private int errorCount &＃61; 0;}


 


7. 可以看到默认端口号是25 并且ssl是false

8. 因此使用telnet确认是否25端口不通

9. 但是同期的报表工程如下

11. 很明显25端口在新的机器上无法使用&＃xff01;&＃xff01;&＃xff01;

12. 那么我们更换使用465端口

13. 因此思路如下 我们在logback中增加对应配置用来设置端口和ssl

<springProperty scope&＃61;"context" name&＃61;"myAppName" source&＃61;"spring.application.name"defaultValue&＃61;"zeus"/><springProperty scope&＃61;"context" name&＃61;"email.username" source&＃61;"logging.email.username"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.password" source&＃61;"logging.email.password"defaultValue&＃61;"***"/><springProperty scope&＃61;"context" name&＃61;"email.from" source&＃61;"logging.email.from"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.to" source&＃61;"logging.email.to"defaultValue&＃61;"***&＃64;f6car.com"/><springProperty scope&＃61;"context" name&＃61;"email.subject" source&＃61;"logging.email.subject"defaultValue&＃61;"ZEUS-NOTICE-DEV-%m{30}"/><springProperty scope&＃61;"context" name&＃61;"email.smtp.host" source&＃61;"logging.email.smtp.host"defaultValue&＃61;"smtp.exmail.qq.com"/><springProperty scope&＃61;"context" name&＃61;"email.smtp.port" source&＃61;"logging.email.smtp.port"defaultValue&＃61;"25"/><springProperty scope&＃61;"context" name&＃61;"email.ssl" source&＃61;"logging.email.ssl"defaultValue&＃61;"false"/><springProperty scope&＃61;"context" name&＃61;"email.pattern" source&＃61;"logging.email.pattern"defaultValue&＃61;"%d [%level] [%thread] %logger{15}:%line %msg%n"/><springProperty scope&＃61;"context" name&＃61;"email.filter" source&＃61;"logging.email.ThresholdFilter"defaultValue&＃61;"ERROR"/><appender name&＃61;"MAIL" class&＃61;"ch.qos.logback.classic.net.SMTPAppender"><To>${email.to}To><username>${email.username}username><subject>${email.subject}subject><from>${email.from}from><Name>${email.smtp.host}Name><password>${email.password}password><SMTPHost>${email.smtp.host}SMTPHost><SMTPPort>${email.smtp.port}SMTPPort><SSL>${email.ssl}SSL><layout class&＃61;"ch.qos.logback.classic.PatternLayout"><pattern>${email.pattern}pattern>layout><filter class&＃61;"ch.qos.logback.classic.filter.ThresholdFilter"><level>${email.filter}level>filter>appender>


 


15. 默认值使用25和false 但是当部署在新机器上可以使用配置成465和true 这样就可以发送邮件
16. 网上检索了 不止一个倒霉蛋碰到了此问题 www.100cm.cn/article-126…
17. 阿里云官方说明help.aliyun.com/knowledge_d… 新的机器上默认禁止25端口&＃xff01;&＃xff01;&＃xff01; 新的机器上默认禁止25端口&＃xff01;&＃xff01;&＃xff01;新的机器上默认禁止25端口&＃xff01;&＃xff01;&＃xff01;