Detect user's smtp host?

Hello,
For school we're working on a Java Applet which has to send an e-mail to the webmaster each a user asks for a username and password. We already have a working class, sending the mail using the smtp server from our ISP is no problem, but when a user somewhere else in the world (who doesn't use the same SMTP server) want's to send mail, it doesn't work, of course, because he can't access "our" smtp server. So we have to find a way to detect the user's smtp server, right? Or is there another possibility? How?
Thanks in advance for your help!
Koen.

Think about every email client that you have ever setup. Have any of them ever tried to detect the SMTP server for the user, or, does the user have to manually enter in the address of the servers, along with login and addressing information, as a part of the setup process? (this of course excludes application packages that are preconfigured)
I'm sure that someone will come back with a method to try to detect the server that will probably work most of the time or maybe even all the time for a specific environment.
Personally, I have always considered knowledge of the server address as one of those basic things you need to know to send email. Like having to know the email address of the person you want to send a message to.
By the way, how do you plan on getting around the applet security issues that always seem to come up?

Similar Messages

SMTP Host logs - How many users are authenticating - How many emails with distinct titles

hello,
can anyone help me out with gathering the following SMTP host logs to see:
How many users are authenticating.
How many emails with distinct titles
Can this be done in powershell or do i need to be looking somewhere else.
This is for O365

Hi ,
Since the emails are hosted with office 365 i would suggest you to raise a ticket with Microsoft and request assistance from them which will make this task much easier
Remember to mark as helpful if you find my contribution useful or as an answer if it does answer your question.That will encourage me - and others - to take time out to help you Check out my latest blog posts on http://exchangequery.com Thanks Sathish
(MVP)

Smtp host name

can anybody tell me if i set the SMTP server host name from .lh setup after loading all the users and objects into the repository ?
will this have any affect on the data or any other unforseen problems?
Thanks for your help.
G

the prod system is built and now i have to set the SMTP host before roll-out.
Will there be any problems if i execute init.xml after configuring SMTP host??

Smtp.host error

i got some error msg
error - javax.mail.MessagingException: Unknown SMTP host: smtp.gmail.com; nested exception is: java.net.UnknownHostException: smtp.gmail.com
code                Properties props = new Properties();
                props.put("mail.smtp.host", "smtp.gmail.com");
                props.put("mail.smtp.port", "465");
                props.put("mail.user","dineshjweerakkody");
                Session mailSession = Session.getDefaultInstance(props, null);
                MimeMessage msg = new MimeMessage(mailSession);
                msg.setFrom(new    InternetAddress(request.getParameter("mymail"),request.getParameter("myname")));
                msg.addRecipient(Message.RecipientType.TO,new InternetAddress(request.getParameter("resmail"),request.getParameter("resname")));
                msg.setSubject(request.getParameter("subject"));
                msg.setText(request.getParameter("message"));
                Transport.send(msg);
                response.sendRedirect("success.jsp");
                Please help me...............

See the JavaMail FAQ for tips on debugging connection problems.

Can't send command to SMTP host

Hi,
I am using Jdev11.1.1.2.0 and web logic servere10.3.I am using mail scheduling in weblogic.Actually in window server 2003 I am getting exception is
get message method--->Can't send command to SMTP host
javax.mail.MessagingException: Can't send command to SMTP host;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
But same application windows7 Its working.
So can u give me the idea ? or any configuration webloigc in windows server 2003 ?
Plz help me.
Thanks
Anup

I put environment variable (path) weblogic.jar but still same issue
get message method--->Can't send command to SMTP host
javax.mail.MessagingException: Can't send command to SMTP host;
nested exception is:
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:1564)
Plz give me the solution..
Thanks
Anup

Javax.mail.MessagingException: Could not connect to SMTP host:

here is a part of my code
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class Mail {
/** Creates a new instance of PostMail */
public Mail() {
public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException
boolean debug = false;
//Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", "smtp."_____".com");
// create some properties and get the default Session
Session session = Session.getDefaultInstance(props, null);
session.setDebug(debug);
// create a message
Message msg = new MimeMessage(session);
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
InternetAddress[] addressTo = new InternetAddress[recipients.length];
for (int i = 0; i < recipients.length; i++)
addressTo[i] = new InternetAddress(recipients);
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Optional : You can also set your custom headers in the Email if you Want
msg.addHeader("MyHeaderName", "myHeaderValue");
// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
Transport.send(msg);
Here is the exception i rec'vd
javax.mail.MessagingException: Could not connect to SMTP host: smtp.google.com, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1282)
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 Mail.postMail(Mail.java:45)
at ArchMain.<init>(ArchMain.java:30)
at ArchMain$6.run(ArchMain.java:360)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
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)
... 17 more

package MailDao;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import java.io.*;
import java.text.*;
import java.text.DateFormat.* ;
import java.io.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.activation.*;
import javax.mail.search.*;
import java.util.Vector.*;
import java.sql.*;
public class SendMail {
String SMTP_HOST_NAME = "smtp.techpepstechnology.com";//smtp.genuinepagesonline.com"; //techpepstechnology.com";
String SMTP_AUTH_USER = "[email protected]"; //[email protected]"; //techpeps";
String SMTP_AUTH_PWD = "demo"; //techpeps2007";
public void postMail( String recipients[ ], String subject,
String message , String from,String msgType) throws MessagingException {
boolean debug = false;
Properties props = System.getProperties();
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", SMTP_HOST_NAME);
props.put("mail.smtp.auth", "true");
Authenticator auth = new SMTPAuthenticator();
Session session = Session.getInstance(props, auth);
session.setDebug(debug);
// create a message
MimeMessage msg = new MimeMessage(session);
// MimeMessage mimemessage = new MimeMessage(simplemailuser.getSession());
// set the from and to address
InternetAddress addressFrom = new InternetAddress(from);
msg.setFrom(addressFrom);
InternetAddress[] addressTo = new InternetAddress[recipients.length];
for (int i = 0; i < recipients.length; i++) {
addressTo[i] = new InternetAddress(recipients);
msg.setRecipients(Message.RecipientType.TO, addressTo);
// Setting the Subject and Content Type
msg.setSubject(subject);
if(msgType.equalsIgnoreCase("")) {
//mimemessage.setText(s4);
msg.setContent(message, "text/plain");
else {
MimeBodyPart textBodyPart = new MimeBodyPart();
textBodyPart.setText(message);
MimeBodyPart fileBodyPart = new MimeBodyPart();
FileDataSource fds = new FileDataSource(msgType);
fileBodyPart.setDataHandler(new DataHandler(fds));
fileBodyPart.setFileName(fds.getName());
//step:5 create the multipart/container to hold the part
Multipart container = new MimeMultipart();
container.addBodyPart(textBodyPart);
container.addBodyPart(fileBodyPart);
//step:6 add the multipart to the actual message
msg.setContent(container);
try{
Transport transport=session.getTransport("smtp");
transport.connect();
transport.send(msg);
transport.close();
}catch(Exception e) {
e.printStackTrace();
private class SMTPAuthenticator extends javax.mail.Authenticator {
public PasswordAuthentication getPasswordAuthentication() {
String username = SMTP_AUTH_USER;
String password = SMTP_AUTH_PWD;
return new PasswordAuthentication(username, password);
public static void main(String arg[]) {
SendMail sm = new SendMail();
String[] s ={"[email protected]"};
try{
sm.postMail(s,"hello","This is testing of mail","[email protected]","");
catch(Exception e)
e.printStackTrace();
//sm.sendMsg("demo", "demo");
System.out.println("Mail Sent");
i also got the follwing error this code work fine in jcreator but i used this in netbeans it throws a exception
plz.....help
javax.mail.MessagingException: Could not connect to SMTP host: smtp.techpepstechnology.com, port: 25;
nested exception is:
java.net.ConnectException: Connection refused: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:867)
Mail Sent
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:156)
at javax.mail.Service.connect(Service.java:256)
at javax.mail.Service.connect(Service.java:135)
at javax.mail.Service.connect(Service.java:87)
at com.sun.mail.smtp.SMTPTransport.connect(SMTPTransport.java:93)
at MailDao.SendMail.postMail(SendMail.java:86)
at MailDao.SendMail.main(SendMail.java:110)

When will come this error Could not connect to SMTP host: son1175, port: 25

Hi all
we configure SMTP server on Linux ES,my java application run on same server
from my application trying to send a mail i got this error
[0] EmailConnection.getConnection: Attempting connection...
DEBUG: setDebug: JavaMail version 1.3.1
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 "son1175", port 25
[0] EmailConnection.getConnection: Cannot connect to server with configuration
smtp://padmanab:*@son1175/. Port = 25. Security: none.
Properties: {mail.port=25, mail.smtp.timeout=30000, mail.smtp.connectiontimeout=30000}
Could not connect to SMTP host: son1175, port: 25;
nested exception is:
java.net.ConnectException: Connection refused
2005-03-30 10:03:03,751 INFO [plt.userManagement] [PoolThread-9] "Password Reset" email could not be sent to vallish at the email address, "[email protected]".
but mail server is configured currectly
please tell cause of this error out java application or my SMTP server
regards
satya

Could not connect to SMTP host: son1175, port: 25;
nested exception is:
java.net.ConnectException: Connection refusedYou didn't notice that this question is asked every day here?
Your computer can't connect to a computer named "son1175", or if it can then that computer isn't running a server listening at port 25. Talk to your network people if your computer name is the right one and ask them why not. It is nothing to do with programming.

LMS 4.2.4 User Tracking End Host Report The system cannot find the path specified

Hello at all,
I have a problem when creating a scheduled User Tracking End Host Report.
I always get the message "The system cannot find the path specified" and the job fails.
An immediate report is successful.
I tried to change the "Report Publish Path" from "C:/Program Files (x86)/CSCOpx/" to "C:/PROGRA~2/CSCOpx/", but that did'nt worked.
Has anybody an idea?
Regards, Kerstin

Share the screenshot of the following directory :
NMSROOT\CSCOpx\campus\etc\cwsi
In case it is blank, try following :
1.Stop the services : net stop crmdmgtd
2.Take a copy of > C:/Progra~2/campus/etc/users and place it under C:/Progra~2/campus/etc/cwsi
3.Start the services : net start crmdmgtd
Please try and let me know the updates.
-Thanks
Vinod
**Encourage Contributors. RATE them.**

SMTP HOST Name in DB Tables

Hi Gurus,
is there any table which stores the SMTP Host Name in the Database? Appreciate your responses.
Thanks!

Hi;
Please check below note which could be helpful:
Unable To Email Dunning Letters - Could not connect to SMTP host [ID 460664.1]
How to Perform a Meaningful SMTP Telnet Test to Troubleshoot Java Mailer For Sending Email Notifications [ID 753845.1]
XML Gateway Fails To Send Workflow Message -- javax.mail.MessagingException: Could Not Connect To SMTP Host [ID 863314.1]
Regard
Helios

RE: (forte-users) Forte SMTP and POP3 Support

Scaffolds includes in a protocol library an smtphandler which allows us to
send emails. It works great! You can try contacting someone at Metamor to
see if they can give you more information on this. I can't give you any
code as it is part of their package. Sorry!
-----Original Message-----
From: Rottier, Pascal [mailto:Rottier.Pascalpmintl.ch]
Sent: Wednesday, February 23, 2000 7:22 AM
To: 'edwardsmjwillis.com'; kamranaminyahoo.com
Subject: RE: (forte-users) Forte SMTP and POP3
Support
Mark,
Unfortunately, Forte doesn't offer any ready-to-use internet
protocoll
support libraries (like FTP, Telnet, SMTP, POP3, NNTP,
UU-code
or MIME). I think this would be a valuable enhancement of
Forte.
Does any one know if SUN plans to include this into Forte?
Does
any one know if there is any third-party set of Tool-classes
that
supports this?
Pascal
> -----Original Message-----
> From: edwardsmjwillis.com [SMTP:edwardsmjwillis.com]
> Sent: Wednesday, February 23, 2000 3:36 PM
> To: kamranaminyahoo.com
> Subject: (forte-users) Forte SMTP and POP3 Support
>
>
>
> Hi,
>
> Our Forte development team are currently investigating how
we can add
> internet
> mail capabilities to a Forte application. Our application
needs to
> send/receive
> mails from a mail server in an NT environment. Does forte
provide SMTP and
> POP3
> protocol support (libraries) so that we can use external
connection class
> to
> connect to the server and send/ receive mails or do we
have to use third
> party
> controls ?.
>
> Any help regarding code examples or third party solutions
would be
> appreciated.
>
> Thanks in advance
>
> Mark J Edwards
> Senior Technical Specialist
> Willis
>
> Email: edwardsmjwillis.com
>
>
>
>
>
> The information in this email and in any attachments is
confidential and
> may be
> privileged. If you are not the intended recipient, please
destroy this
> message,
> delete any copies held on your systems and notify the
sender immediately.
> You
> should not retain, copy or use this email for any purpose,
nor disclose
> all or
> any part of its content to any other person.
>
>
> --
> For the archives, go to:
http://lists.xpedior.com/forte-users and use
> the login: forte and the password: archive. To
unsubscribe, send in a new
> email the word: 'Unsubscribe' to:
forte-users-requestlists.xpedior.com
For the archives, go to:
http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe,
send in a new
email the word: 'Unsubscribe' to:
forte-users-requestlists.xpedior.com

Hi,
Unfortunatly, Forte does not provide SMTP and POP3 protocoles.
But, you can use External connections to do it if you need.
You can find a simple SMTP send mail sample code on
http://perso.club-internet.fr/dnguyen/ . The receive should be as easy as the send.
For MIME base 64 encoding and decoding, it should last one or two weeks of coding
(if you need optimization).
One advantage of coding this in Tool directly is the portability.
In your case, on NT, you could also interface with MAPI using for instance the
ActiveX interface.
By that way, you will already have SMTP, POP3 and MIME.
Hope this helps,
Daniel Nguyen
Freelance Forte Consultant
http://perso.club-internet.fr/dnguyen/
edwardsmjwillis.com a écrit:
Hi,
Our Forte development team are currently investigating how we can add internet
mail capabilities to a Forte application. Our application needs to send/receive
mails from a mail server in an NT environment. Does forte provide SMTP and POP3
protocol support (libraries) so that we can use external connection class to
connect to the server and send/ receive mails or do we have to use third party
controls ?.
Any help regarding code examples or third party solutions would be appreciated.
Thanks in advance
Mark J Edwards
Senior Technical Specialist
Willis
Email: edwardsmjwillis.com
The information in this email and in any attachments is confidential and may be
privileged. If you are not the intended recipient, please destroy this message,
delete any copies held on your systems and notify the sender immediately. You
should not retain, copy or use this email for any purpose, nor disclose all or
any part of its content to any other person.
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

Javax.servlet.ServletException: Unknown SMTP host

Hi
I am using tomcat and trying to send emails. I keep getting a javax.servlet.ServletException: Unknown SMTP host error.
I initially thought the problem was with the line: props.put("mail.smtp.host", "makethegrade.co.za"); But i checked the smtp info with the guys i'm hosing with and they said its right
I am currently setting the fields manually, so it can't be a problem with passing data around in the webpage
In my WEB-INF/lib i have jaf-1.0.2 and javamail-1.4.1 (i.e. mail.jar and activation.jar)
The code for my mailer bean is:
package mailer;
import java.io.*;
import java.util.*;
import javax.mail.*;
import javax.mail.event.*;
import javax.mail.internet.*;
public final class MailerBean extends Object implements Serializable {
     /* Bean Properties */
     private String to = null;
     private String from = null;
     private String subject = null;
     private String message = null;
     public static Properties props = null;
     public static Session session = null;
     static {
          /*     Setting Properties for STMP host */
          props = System.getProperties();
          props.put("mail.smtp.host", "makethegrade.co.za");
          session = Session.getDefaultInstance(props, null);
     /* Setter Methods */
     public void setTo(String to) {
          this.to = to;
     public void setFrom(String from) {
          this.from = from;
     public void setSubject(String subject) {
          this.subject = subject;
     public void setMessage(String message) {
          this.message = message;
     /* Sends Email */
     public void sendMail() throws Exception {
          if(!this.everythingIsSet())
               throw new Exception("Could not send email.");
          try {
               MimeMessage message = new MimeMessage(session);
               message.setRecipient(Message.RecipientType.TO,
                    new InternetAddress(this.to));
               message.setFrom(new InternetAddress(this.from));
               message.setSubject(this.subject);
               message.setText(this.message);
               Transport.send(message);
          } catch (MessagingException e) {
               throw new Exception("Caught in sendMail" + e.getMessage());
     /* Checks whether all properties have been set or not */
     private boolean everythingIsSet() {
          if((this.to == null) || (this.from == null) ||
             (this.subject == null) || (this.message == null))
               return false;
          if((this.to.indexOf("@") == -1) ||
               (this.to.indexOf(".") == -1))
               return false;
          if((this.from.indexOf("@") == -1) ||
               (this.from.indexOf(".") == -1))
               return false;
          return true;
}and the error i get is:
org.apache.jasper.JasperException: Exception in JSP: /processingPages/mailer.jsp:17
14:           mailer.setFrom("[email protected]");
15:           mailer.setSubject("mailer test");
16:           mailer.setMessage("TEst test test");
17:           mailer.sendMail();
18:
19:      %>
20: </jsp:useBean>
Stacktrace:
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:451)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause
javax.servlet.ServletException: Unknown SMTP host: mail.yourisp.com
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
     org.apache.jsp.processingPages.mailer_jsp._jspService(mailer_jsp.java:89)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
root cause
java.lang.Exception: Unknown SMTP host: mail.yourisp.com
     mailer.MailerBean.sendMail(MailerBean.java:54)
     org.apache.jsp.processingPages.mailer_jsp._jspService(mailer_jsp.java:67)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
Tomcat logs give:
Jul 15, 2009 10:50:35 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.Exception: Unknown SMTP host: mail.yourisp.com
     at mailer.MailerBean.sendMail(MailerBean.java:54)
     at org.apache.jsp.processingPages.mailer_jsp._jspService(mailer_jsp.java:67)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
     at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
     at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
     at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:773)
     at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:703)
     at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:895)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
     at java.lang.Thread.run(Thread.java:619)
If anyone needs any other details feel free to ask.
Any help or any pointers to a place to find a solution would be deeply appreciated
Thanks

All I can see is that you are running this in a web application. In most web application containers there's a place where you configure your mail providers and mail sessions. You seem to be ignoring that (you aren't using JNDI to get a session for example) but you are getting the default instance, so perhaps that uses that configuration anyway.

MessagingException "Unknown SMTP host"

Hi
I am using JavaMail to send out emails from an ecommerce application. We are now deploying the application and are getting the following message....
nested exception is:
class javax.mail.MessagingException: Unknown SMTP host: smtp.thehost.com ;
nested exception is:
java.net.UnknownHostException: smtp.thehost.com
(note the server name is not actually smtp.thehost.com) - ive used that one here for confidentality.
If i try to telnet to smtp.thehost.com on port 25 i get the expected 220 and everything seems fine. Its like JavaMail cant see the mailhost when everything else can.
I am using :
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
Java HotSpot(TM) Client VM (build 1.4.2_04-b05, mixed mode)
on Redhat.
Any suggestions?
Regards
Lawrence

If i try to telnet to smtp.thehost.com on port 25 i get the expected 220 and everything seems fine. Its like JavaMail cant see the mailhost when everything else can.This suggests that you aren't telling JavaMail the right host name. It looks to me as if it has an unnecessary space at the end, but at any rate check your code.

Unknown SMTP host exception...

Hi all...
am a newbie in j2ee...i have to send mails from my application...
have written the code...but it gives an error like the smtp host specified, is
unknown...
can anyone pleaz tell me what r the things to be set up or what r the configurations to be done to send a mail using program...am using Transport.send(message) function to do it...plz help me...
thanx and regards,
sand...

Hi,
As mentioned in the debugging steps, I turned the debugging session on by "session.setDebug(true);".I got the following printed on my console:
DEBUG: setDebug: JavaMail version 1.4ea
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 "smtp.gmail.com", port 25, isSSL false
MessagingException
javax.mail.MessagingException: Unknown SMTP host: smtp.gmail.com;
nested exception is:
     java.net.UnknownHostException: smtp.gmail.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 sendMail.main(sendMail.java:28)
Caused by: java.net.UnknownHostException: smtp.gmail.com
     at java.net.PlainSocketImpl.connect(Unknown Source)
     at java.net.SocksSocketImpl.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     at java.net.Socket.connect(Unknown Source)
     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)
     ... 7 more
I also tried to use telnet to connect as
telnet smtp.gmail.com 25
Here I got an output like
Connecting To smtp.gmsil.com...Could not open connection to the host, on port 25
: Connect failed
so now I donot understand wher the problem lies actually.
Can you please suggest anything?
Thanks

Solaris 11 SMTP Host Confirmation

Trying to find where in solaris an smtp host is configured. we are changing some relays and need to reconfigure where it sends mail through.

Hi,
if you mean how to tell a system to deliver locally received mail messages to a central
mail server for processing then this is done by making sure the mail server is known
as "mailhost.your.domain.name":
For the client system:
https://docs.oracle.com/cd/E36784_01/html/E36828/mailadmin-20.html#scrolltoc
For the actual mail server:
https://docs.oracle.com/cd/E36784_01/html/E36828/mailadmin-29.html
Regards,
Ronald

Hello, javax.mail.MessagingException: Unknown SMTP host:

Hello,
I am trying to send a mail and use a smtp Server which is located on the internet. I am however behind a firewall and am getting the following exception being thrown:
javax.mail.MessagingException: Unknown SMTP host:
This implies that I need to provide some settings for my proxy server. I though to solve this problem I could do the following:
System.getProperties().put("proxySet", "true");
System.getProperties().put("http.proxyHost", proxyHost);
System.getProperties().put("http.proxyPort", proxyport);
This however does not solve me problem as I still get the above exception. Could someone please give help me. Any suggestions,solutions or ideas as to what the problem might be would be appreciated.
Thanks much,
Alex.

HTTP is not SMTP.
Your proxy server no doubt allows your system to send
HTTP traffic to and from the outside world, and using
that code you posted would allow Java classes to do
that as well. But HTTP is not SMTP. Ask the network
people who configured your proxy server if it can act
as an SMTP proxy, and if so what you have to do to
use it in that way.Thanks much for your reply. I am however a little confused. Could you explain to me exactly what an SMTP proxy is/does.
Thanks much,
Alex.

Detect user's smtp host?

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