使用普通账户，用工具栏的邮件发送功能发送邮件失败。

使用admin账户可以发送，测试邮件也能发送。

开启了角色权限控制。

不是这个原因：刚才测试了一下，如果把邮箱设置的权限给普通用户，就连测试邮件都会发送失败，如果把权限收回，又会恢复。

跟权限控制没有关系，admin账户也是有时能用有时不能用。重启之后再发送失败，tomcat收集到了下面的错误。

应该是smtp服务问题或是tomcat权限问题，在尝试中。

根据flyingsnake的方法更改了加密方式为不加密，测试可以发送。

求大神。

二月 19, 2019 11:22:47 上午 
警告: Exception reading response
javax.mail.MessagingException: Exception reading response;
  nested exception is:
	javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Connection reset
	at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1611)
	at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1413)
	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:410)
	at javax.mail.Service.connect(Service.java:288)
	at javax.mail.Service.connect(Service.java:169)
	at com.fr.base.EmailManager.connect(Unknown Source)
	at com.fr.base.EmailManager.send(Unknown Source)
	at com.fr.base.EmailManager.send(Unknown Source)
	at com.fr.base.EmailManager.send(Unknown Source)
	at com.fr.base.EmailManager.send(Unknown Source)
	at com.fr.base.EmailManager.sendTestMail(Unknown Source)
	at com.fr.fs.web.service.ServerConfigTestMailAction.actionCMD(Unknown Source)
	at com.fr.web.core.WebActionsDispatcher.dealForActionNoSessionIDCMD(Unknown Source)
	at com.fr.fs.web.service.ServerConfigService.process(Unknown Source)
	at com.fr.stable.fun.impl.NoSessionIDService.process(Unknown Source)
	at com.fr.web.core.ReportDispatcher.dealWithOp(Unknown Source)
	at com.fr.web.core.ReportDispatcher.dealWeblet(Unknown Source)
	at com.fr.web.core.ReportDispatcher.dealWithRequest(Unknown Source)
	at com.fr.web.BaseServlet.doGet(Unknown Source)
	at com.fr.web.BaseServlet.doPost(Unknown Source)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Unknown Source)
Caused by: javax.net.ssl.SSLException: Connection has been shutdown: javax.net.ssl.SSLException: java.net.SocketException: Connection reset
	at sun.security.ssl.SSLSocketImpl.checkEOF(Unknown Source)
	at sun.security.ssl.AppInputStream.read(Unknown Source)
	at com.sun.mail.util.TraceInputStream.read(TraceInputStream.java:110)
	at java.io.BufferedInputStream.fill(Unknown Source)
	at java.io.BufferedInputStream.read(Unknown Source)
	at com.sun.mail.util.LineInputStream.readLine(LineInputStream.java:88)
	at com.sun.mail.smtp.SMTPTransport.readServerResponse(SMTPTransport.java:1589)
	... 43 more
Caused by: javax.net.ssl.SSLException: java.net.SocketException: Connection reset
	at sun.security.ssl.Alerts.getSSLException(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.handleException(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.handleException(Unknown Source)
	at sun.security.ssl.AppOutputStream.write(Unknown Source)
	at com.sun.mail.util.TraceOutputStream.write(TraceOutputStream.java:114)
	at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
	at java.io.BufferedOutputStream.flush(Unknown Source)
	at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:1562)
	at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:1551)
	at com.sun.mail.smtp.SMTPTransport.ehlo(SMTPTransport.java:935)
	at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:426)
	at javax.mail.Service.connect(Service.java:310)
	at javax.mail.Service.connect(Service.java:169)
	at javax.mail.Service.connect(Service.java:118)
	... 39 more
Caused by: java.net.SocketException: Connection reset
	at java.net.SocketInputStream.read(Unknown Source)
	at java.net.SocketInputStream.read(Unknown Source)
	at sun.security.ssl.InputRecord.readFully(Unknown Source)
	at sun.security.ssl.InputRecord.read(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
	at sun.security.ssl.SSLSocketImpl.writeRecord(Unknown Source)
	... 50 more