版本号：2.01

问题描述: 后台启动之后,mail报错

截图&代码：

2019-06-19 16:29:30.420 [main] INFO org.jeecg.JeecgApplication:28 -

Application Jeecg-Boot is running! Access URLs:
Local: 		http://localhost:8080/jeecg-boot/
External: 	http://172.100.2.102:8080/jeecg-boot/
swagger-ui: 	http://172.100.2.102:8080/jeecg-boot/swagger-ui.html
Doc: 		http://172.100.2.102:8080/jeecg-boot/doc.html

2019-06-19 16:29:30.834 [RMI TCP Connection(11)-172.100.2.102] INFO o.a.c.c.C.[Tomcat].[localhost].[/jeecg-boot]:173 - Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-06-19 16:29:30.834 [RMI TCP Connection(11)-172.100.2.102] INFO org.springframework.web.servlet.DispatcherServlet:524 - Initializing Servlet 'dispatcherServlet'
2019-06-19 16:29:30.856 [RMI TCP Connection(11)-172.100.2.102] INFO org.springframework.web.servlet.DispatcherServlet:546 - Completed initialization in 21 ms
2019-06-19 16:29:31.803 [RMI TCP Connection(12)-172.100.2.102] WARN o.s.boot.actuate.mail.MailHealthIndicator:89 - Mail health check failed
javax.mail.MessagingException: STARTTLS is required but host does not support STARTTLS
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:762)
at javax.mail.Service.connect(Service.java:366)
at org.springframework.mail.javamail.JavaMailSenderImpl.connectTransport(JavaMailSenderImpl.java:517)
at org.springframework.mail.javamail.JavaMailSenderImpl.testConnection(JavaMailSenderImpl.java:397)
at org.springframework.boot.actuate.mail.MailHealthIndicator.doHealthCheck(MailHealthIndicator.java:43)
at org.springframework.boot.actuate.health.AbstractHealthIndicator.health(AbstractHealthIndicator.java:84)
at org.springframework.boot.actuate.health.CompositeHealthIndicator.health(CompositeHealthIndicator.java:98)
at org.springframework.boot.actuate.health.HealthEndpoint.health(HealthEndpoint.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:246)
at org.springframework.boot.actuate.endpoint.invoke.reflect.ReflectiveOperationInvoker.invoke(ReflectiveOperationInvoker.java:76)
at org.springframework.boot.actuate.endpoint.annotation.AbstractDiscoveredOperation.invoke(AbstractDiscoveredOperation.java:61)
at org.springframework.boot.actuate.endpoint.jmx.EndpointMBean.invoke(EndpointMBean.java:126)
at org.springframework.boot.actuate.endpoint.jmx.EndpointMBean.invoke(EndpointMBean.java:99)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468)
at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76)
at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309)
at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401)
at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
at sun.rmi.transport.Transport$1.run(Transport.java:200)
at sun.rmi.transport.Transport$1.run(Transport.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
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)
2019-06-19 16:29:31.930 [RMI TCP Connection(12)-172.100.2.102] INFO io.lettuce.core.EpollProvider:68 - Starting without optional epoll library
2019-06-19 16:29:31.932 [RMI TCP Connection(12)-172.100.2.102] INFO io.lettuce.core.KqueueProvider:70 - Starting without optional kqueue library