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邮件服务器配置错误Unknown SMTP host:

JavaApacheLinuxSUNTomcat 
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今天在linux上配置jira邮件服务器，居然报错，同样的配置在windows上运行没有问题，

windows下配置：

 

windows 邮件发送成功信息:

Your test message has been sent successfully to jin.fang@bytime.com.cn .

DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host "mail.bytime.com.cn", port 25, isSSL false
220 mail.bytime.com.cn Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830 ready at  Fri, 13 Mar 2009 17:03:17 +0800
DEBUG SMTP: connected to host "mail.bytime.com.cn", port: 25

EHLO jinfang

 

 

linux 邮件发送失败信息

An error has occurred with sending the test email:
com.atlassian.mail.MailException: javax.mail.MessagingException: Unknown SMTP host: mail.bytime.com.cn;
  nested exception is:
 java.net.UnknownHostException: mail.bytime.com.cn
 at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:191)
 at com.atlassian.jira.web.action.admin.mail.SendTestMail.doExecute(SendTestMail.java:88)
 at webwork.action.ActionSupport.execute(ActionSupport.java:153)
 at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:54)
 at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:132)
 at com.atlassian.jira.web.dispatcher.JiraServletDispatcher.service(JiraServletDispatcher.java:211)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.jira.web.filters.AccessLogFilter.doFilter(AccessLogFilter.java:73)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:119)
 at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:55)
 at com.atlassian.jira.web.filters.SitemeshExcludePathFilter.doFilter(SitemeshExcludePathFilter.java:38)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.seraph.filter.SecurityFilter.doFilter(SecurityFilter.java:192)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.seraph.filter.TrustedApplicationsFilter.doFilter(TrustedApplicationsFilter.java:120)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.seraph.filter.BaseLoginFilter.doFilter(BaseLoginFilter.java:125)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.util.profiling.filters.ProfilingFilter.doFilter(ProfilingFilter.java:132)
 at com.atlassian.jira.web.filters.JIRAProfilingFilter.doFilter(JIRAProfilingFilter.java:16)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.jira.web.filters.ActionCleanupDelayFilter.doFilter(ActionCleanupDelayFilter.java:43)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.jira.web.filters.RequestCleanupFilter.doFilter(RequestCleanupFilter.java:50)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.johnson.filters.AbstractJohnsonFilter.doFilter(AbstractJohnsonFilter.java:72)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:350)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.gzipfilter.GzipFilter.doFilter(GzipFilter.java:79)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.core.filters.AbstractEncodingFilter.doFilter(AbstractEncodingFilter.java:37)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at com.atlassian.jira.appconsistency.db.DatabaseCompatibilityEnforcerFilter.doFilter(DatabaseCompatibilityEnforcerFilter.java:39)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
 at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
 at java.lang.Thread.run(Thread.java:595)
Caused by: javax.mail.MessagingException: Unknown SMTP host: mail.bytime.com.cn;
  nested exception is:
 java.net.UnknownHostException: mail.bytime.com.cn
 at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1211)
 at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:311)
 at javax.mail.Service.connect(Service.java:233)
 at javax.mail.Service.connect(Service.java:134)
 at javax.mail.Service.connect(Service.java:86)
 at com.sun.mail.smtp.SMTPTransport.connect(SMTPTransport.java:144)
 at javax.mail.Transport.send0(Transport.java:150)
 at javax.mail.Transport.send(Transport.java:80)
 at alt.javax.mail.TransportImpl.send(TransportImpl.java:18)
 at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:177)
 ... 63 more


DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host "mail.bytime.com.cn", port 25, isSSL false

 

 

 

解决办法：

 

如上图。在windows中设置了dns服务器

而我在linux下没有设置dns服务器

如果把上图的dns服务器去掉，重启jira服务，则发送邮件的结果和linux下一样。

嗨，就这么个小问题，搞了一天，郁闷呀，现在回想还真是有道理：不能上网怎么去访问邮件服务器mail.bytime.com.cn呢？

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