记一次jenkins 邮件服务配置问题

• 公司机房改电，服务一年有余的jenkins终于迎来了重启的时刻 ,然后就遇到了以下问题。
• 运行项目的时候发现邮件服务不能正常运行了，具体报错如下：

Caused: javax.mail.MessagingException: Could not connect to SMTP host: <strong>***</strong>邮箱服务地址***, port: 465;
  nested exception is:
	javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate)
		at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1934)
		at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
		at javax.mail.Service.connect(Service.java:317)
		at javax.mail.Service.connect(Service.java:176)
		at javax.mail.Service.connect(Service.java:125)
		at javax.mail.Transport.send0(Transport.java:194)
		at javax.mail.Transport.send(Transport.java:124)
		at org.jenkinsci.plugins.workflow.steps.MailStep$MailStepExecution.run(MailStep.java:142)
		at org.jenkinsci.plugins.workflow.steps.MailStep$MailStepExecution.run(MailStep.java:128)
Caused: java.io.IOException
	at hudson.remoting.FastPipedInputStream.read(FastPipedInputStream.java:169)
	at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
	at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
	at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
	at java.io.InputStreamReader.read(InputStreamReader.java:184)
	at java.io.Reader.read(Reader.java:140)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2537)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:2516)
	at org.apache.commons.io.IOUtils.copy(IOUtils.java:2493)
	at org.apache.commons.io.IOUtils.copy(IOUtils.java:2441)
	at org.apache.commons.io.IOUtils.toString(IOUtils.java:1084)
	at org.apache.commons.io.IOUtils.toString(IOUtils.java:1110)
	at org.jenkinsci.plugins.workflow.steps.ReadFileStep$Execution.run(ReadFileStep.java:108)
	at org.jenkinsci.plugins.workflow.steps.ReadFileStep$Execution.run(ReadFileStep.java:94)
	at org.jenkinsci.plugins.workflow.steps.SynchronousNonBlockingStepExecution.lambda$start$0(SynchronousNonBlockingStepExecution.java:47)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	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)</pre>

• 百度一下发现是SSL协议问题：
• 解决方法如下（以下是我的jdk路径）：
  编辑security/java.security 文件
  sudo vi /etc/java-8-openjdk/security/java.security
  删除 SSLv3 TLSV1 TLSV1.1
• 最后重启jenkins服务