JavaMail 发送邮件出现 Connection reset 问题

问题描述

使用 java mail 发送邮件的时候，申请的 163 邮箱作为发件箱，然无论如何配置，均出现 Connection reset，无法正常发送邮件。

Exception in thread "pool-2-thread-1" cn.hutool.extra.mail.MailException: MessagingException: Could not connect to SMTP host: smtp.163.com, port: 465

	at cn.hutool.extra.mail.Mail.send(Mail.java:229)

	at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:211)

	at cn.hutool.extra.mail.MailUtil.send(MailUtil.java:175)

	at com.shulipeng.common.service.impl.MailServiceImpl.sendMail(MailServiceImpl.java:57)

	at com.shulipeng.activiti.listener.MyEventListener.sendMail(MyEventListener.java:134)

	at com.shulipeng.activiti.listener.MyEventListener.lambda$notify$0(MyEventListener.java:93)

	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)

	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

	at java.lang.Thread.run(Thread.java:748)

Caused by: javax.mail.MessagingException: Could not connect to SMTP host: smtp.163.com, port: 465;

  nested exception is:

	java.net.SocketException: Connection reset

	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2211)

	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:740)

	at javax.mail.Service.connect(Service.java:388)

	at javax.mail.Service.connect(Service.java:246)

	at javax.mail.Service.connect(Service.java:195)

	at javax.mail.Transport.send0(Transport.java:254)

	at javax.mail.Transport.send(Transport.java:124)

	at cn.hutool.extra.mail.Mail.doSend(Mail.java:241)

	at cn.hutool.extra.mail.Mail.send(Mail.java:227)

	... 8 more

Caused by: java.net.SocketException: Connection reset

	at java.net.SocketInputStream.read(SocketInputStream.java:210)

	at java.net.SocketInputStream.read(SocketInputStream.java:141)

	at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)

	at sun.security.ssl.InputRecord.read(InputRecord.java:503)

	at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:975)

	at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1367)

	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1395)

	at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1379)

	at com.sun.mail.util.SocketFetcher.configureSSLSocket(SocketFetcher.java:620)

	at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:394)

	at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:218)

	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2175)

	... 16 more

问题解决

相同的代码，用公司的网络不能正常发送，用自己手机发出来的热点可以发送，原因是因为被墙了....

由于是公司电脑进行开发，是处于内网状态，虽然我们去 telnet smtp.163.com 25 或者 telnet smtp.163.com 465 都是通的，

但由于发送邮件的时候是通过 socket 与邮箱服务器进行通信的，由于防火墙的原因，导致着邮箱服务器和自己的电脑连接失败，所以出现此问题。

巴特西

JavaMail 发送邮件出现 Connection reset 问题

问题描述

问题解决

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