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Debugging a mail session


When we need to debug a mail application, we can use the mail debugging feature. The mail component will generate debugging information, on a per session basis, that can be used for problem determination or tuning.

Enable the debug mode triggers the mail component of the application server to print the following data to the standard output stream:

This output stream is redirected to SystemOut.log for the specific appserver.

 

  1. Open the admin console.

  2. Click Resources > Mail > Mail sessions > mail session .

  3. Click Enable debug mode. Debugging is enabled for that session only.

  4. Click Apply or OK.

 

Example

The following example shows sample mail debugging output: 

ResourceMgrIm I   WSVR0049I: Binding Test as mail/test SystemOut     
O *** In SessionReferenceable.getReference: SystemOut     
O  added StringRefAddr: type=ws.transport.password, content=**** SystemOut     
O  added StringRefAddr: type=ws.isolated.class.loader, content=false SystemOut     
O  added StringRefAddr: type=mail.transport.protocol, content=smtp SystemOut     
O  added StringRefAddr: type=mail.imaps.class, content=com.sun.mail.imap.IMAPSSLStore SystemOut     
O  added StringRefAddr: type=mail.smtp.host, content=smtp.coldmail.com SystemOut     
O  added StringRefAddr: type=mail.debug, content=true SystemOut     
O  added StringRefAddr: type=mail.pop3s.class, content=com.sun.mail.pop3.POP3SSLStore SystemOut     
O  added StringRefAddr: type=mail.from, content=smith@coldmail.com SystemOut     
O  added StringRefAddr: type=mail.smtp.class, content=com.sun.mail.smtp.SMTPTransport SystemOut     
O  added StringRefAddr: type=mail.smtps.class, content=com.sun.mail.smtp.SMTPSSLTransport SystemOut     
O  added StringRefAddr: type=mail.imap.class, content=com.sun.mail.imap.IMAPStore SystemOut     
O  added StringRefAddr: type=mail.smtp.user, content=smith SystemOut     
O  added StringRefAddr: type=mail.pop3.class, content=com.sun.mail.pop3.POP3Store SystemOut     
O  added StringRefAddr: type=mail.mime.address.strict, content=true


 SystemOut     
O DEBUG: Java Mail version 1.4ea SystemOut     
O DEBUG: java.io.FileNotFoundException:  C:\Program Files\IBM\WebSphere\AppServer\java\jre\lib\javamail.providers  (The system cannot find the file specified.) SystemOut     
O DEBUG: !anyLoaded SystemOut     
O DEBUG: not loading resource: /META-INF/javamail.providers SystemOut     
O DEBUG: successfully loaded resource: /META-INF/javamail.default.providers SystemOut     
O DEBUG: Tables of loaded providers SystemOut     
O DEBUG: Providers Listed By Class Name: 
     {com.sun.mail.smtp.SMTPSSLTransport=javax.mail.Provider
[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems, Inc],  com.sun.mail.smtp.SMTPTransport=javax.mail.Provider
[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc],  com.sun.mail.imap.IMAPSSLStore=javax.mail.Provider
[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems, Inc],  com.sun.mail.pop3.POP3SSLStore=javax.mail.Provider
[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc],  com.sun.mail.imap.IMAPStore=javax.mail.Provider
[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc],  com.sun.mail.pop3.POP3Store=javax.mail.Provider
[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc]} SystemOut     
O DEBUG: Providers Listed By Protocol: 
{imaps=javax.mail.Provider[STORE,imaps,com.sun.mail.imap.IMAPSSLStore,Sun Microsystems,Inc],
  imap=javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Sun Microsystems, Inc],
  smtps=javax.mail.Provider[TRANSPORT,smtps,com.sun.mail.smtp.SMTPSSLTransport,Sun Microsystems,Inc],
  pop3=javax.mail.Provider[STORE,pop3,com.sun.mail.pop3.POP3Store,Sun Microsystems, Inc],
  pop3s=javax.mail.Provider[STORE,pop3s,com.sun.mail.pop3.POP3SSLStore,Sun Microsystems, Inc],
  smtp=javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]} SystemOut     
O DEBUG: successfully loaded resource: /META-INF/javamail.default.address.map SystemOut     
O DEBUG: !anyLoaded SystemOut     
O DEBUG: not loading resource: /META-INF/javamail.address.map SystemOut     
O DEBUG: java.io.FileNotFoundException: 
     C:\Program Files\IBM\WebSphere\AppServer\java\jre\lib\javamail.address.map 
     (The system cannot find the file specified.) SystemOut     
O *** In SessionFactory.setPasswordAuthentication, 
   TRANSPORT PasswordAuthentication is based on: SystemOut     
O  url=smtp:
//smith@smtp.coldmail.com SystemOut     
O  user=smith SystemOut     
O  password=**** SystemOut     
O *** In SessionFactory.getObjectInstance, session properties: SystemOut     
O  mail.transport.protocol=smtp SystemOut     
O  mail.imaps.class=com.sun.mail.imap.IMAPSSLStore SystemOut     
O  mail.smtp.host=smtp.coldmail.com SystemOut     
O  mail.debug=true

 SystemOut     
O  mail.pop3s.class=com.sun.mail.pop3.POP3SSLStore SystemOut     
O  mail.from=smith@coldmail.com SystemOut     
O  mail.smtp.class=com.sun.mail.smtp.SMTPTransport SystemOut     
O  mail.smtps.class=com.sun.mail.smtp.SMTPSSLTransport SystemOut     
O  mail.imap.class=com.sun.mail.imap.IMAPStore SystemOut     
O  mail.smtp.user=smith SystemOut     
O  mail.pop3.class=com.sun.mail.pop3.POP3Store SystemOut     
O  mail.mime.address.strict=true SystemOut     
O DEBUG: mail.smtp.class property exists and points to com.sun.mail.smtp.SMTPTransport SystemOut     
O DEBUG SMTP: useEhlo true, useAuth false SystemOut     
O DEBUG SMTP: trying to connect to host "smtp.coldmail.com", port 25, isSSL false

 javax.mail.MessagingException: Unknown SMTP host: smtp.coldmail.com;
  nested exception is:
 java.net.UnknownHostException: smtp.coldmail.com
 at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1280)
 at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
 at javax.mail.Service.connect(Service.java:275)
 at javax.mail.Service.connect(Service.java:156)
 at javax.mail.Service.connect(Service.java:105)
 at javax.mail.Transport.send0(Transport.java:168)
 at javax.mail.Transport.send(Transport.java:98)
 at com.ibm.ws.mail.ut.TestServlet.doTask(TestServlet.java:104)
 at com.ibm.ws.mail.ut.TestServlet.doGet(TestServlet.java:65)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1397)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:759)
 at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:429)
 at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:175)
 at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:3512)
 at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:273)
 at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:896)
 at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1530)
 at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:161)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
 at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:272)
 at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:214)
 at com.ibm.ws.tcp.channel.impl.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:113)
 at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
 at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
 at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
 at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
 at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:202)
 at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:766)
 at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:896)
 at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1487) Caused by: java.net.UnknownHostException: smtp.coldmail.com
 at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:196)
 at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
 at java.net.Socket.connect(Socket.java:519)
 at java.net.Socket.connect(Socket.java:469)
 at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
 at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
 at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
 ... 32 more

This output illustrates a connection failure to a Simple Mail Transfer Protocol (SMTP) server because a fictitious name, smtp.coldmail.com, is specified as the server name.

The following list provides tips on reading the previous sample of debugger output: