Jenkins配置邮件报错Connection closed by remote host

Question

Jenkins全局配置邮箱信息的时候报错：
java.net.SocketException: Connection closed by remote host

at sun.security.ssl.SSLSocketImpl.checkWrite(SSLSocketImpl.java:1547)
at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:71)
at com.sun.mail.util.TraceOutputStream.write(TraceOutputStream.java:114)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:2104)

Caused: javax.mail.MessagingException: Can't send command to SMTP host;
nested exception is:

java.net.SocketException: Connection closed by remote host
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:2106)
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:2093)
at com.sun.mail.smtp.SMTPTransport.close(SMTPTransport.java:1184)
at javax.mail.Transport.send0(Transport.java:197)
at javax.mail.Transport.send(Transport.java:124)
at hudson.tasks.Mailer$DescriptorImpl.doSendTestMail(Mailer.java:613)
at java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:627)

具体配置如下：

邮箱信息：

随便从网上找了个例子用Java发是可以成功的

配置一样：