I am trying to send email using apache james but the emails are not getting delievered. Below is my code.
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
public class test {
public static void main(String args[]) throws Exception {
String user = "test";
String password = "test";
String fromAddress = "test#localhost";
String toAddress = "test#gmail.com";
Properties properties = new Properties();
properties.put("mail.smtp.host", "localhost");
properties.put("mail.smtp.port", "25");
properties.put("mail.smtp.username", user);
properties.put("mail.smtp.password", password);
properties.put("mail.transport.protocol", "smtp");
Session session = Session.getDefaultInstance(properties, null);
try
{
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(fromAddress));
message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toAddress));
message.setSubject("Email from our JAMEs");
message.setText("hiiiiii!!");
Transport.send(message);
System.out.println("Email sent");
}
catch (MessagingException e)
{
e.printStackTrace();
}
}
}
Also test user is added in apache james having password test. Requesting you to kindly help me out in the same.
I think problem caused by this:
Email servers before accepting any mail do a reverse dns query. They check the ip for domain that the email came from and the ip that email is really came from.
If ip of domain and ip of email sender does not match, mail servers think that email is junk or spam.
Here since your domain (localhost) is not a valid address when Email server send a reverse dns query does not get an IP and think your mail is junk or spam.
For more information check this: http://wiki.junkemailfilter.com/index.php/Fixing_Reverse_DNS
I faced the same problem. What I did:
Go to the path : \apps\james\conf
Open for edit the filename 'james-fetchmail.xml'
Change "fetchmail" from false to true as:
Restart the Apache James Server.
You would see the following messages printed on the console after you start the server:
James Mail Server 2.3.2
Remote Manager Service started plain:4555
POP3 Service started plain:110
SMTP Service started plain:25
NNTP Service started plain:119
FetchMail Started
Now, run your program. It should work!
Did you added the domain "localhost"?
If not, add the domain first, and after create the users.
$ james-cli AddDomain -h 127.0.0.1 localhost
check if domain exists
$ james-cli ListDomains -h 127.0.0.1
And, how do you started james? Using james.bat?
Related
I need to send email from java program. I am first trying to understand basics. I found a snippet at:
https://www.javatpoint.com/example-of-sending-email-using-java-mail-api
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
public class SendEmail
{
public static void main(String [] args){
String to = "sonoojaiswal1988#gmail.com";//change accordingly
String from = "sonoojaiswal1987#gmail.com";change accordingly
String host = "localhost";//or IP address
//Get the session object
Properties properties = System.getProperties();
properties.setProperty("mail.smtp.host", host);
Session session = Session.getDefaultInstance(properties);
//compose the message
try{
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
message.setSubject("Ping");
message.setText("Hello, this is example of sending email ");
// Send message
Transport.send(message);
System.out.println("message sent successfully....");
}catch (MessagingException mex) {mex.printStackTrace();}
}
}
My question is that as per the code, it looks like anyone can use any sender email address string and send infinite emails to any receiver email address. I am missing something in my understanding, which will prevent such scenario to happen. Please help.
I understand that this is not a programming question, but guess, it will not take too much time to answer this basic question and don't know any other equally active forum.
This example works for servers which don't need authentication. And this is usually not applicable to the smtp servers used in production. Such servers are used mostly for testing purposes where they are not exposed over the internet. Hence, although its possible to send infinite number of mails as mentioned by you, no one would be interested in doing the same.
For the servers where authentication is necessary, credentials need to be provided. And this is explained in detail in the blog mentioned by you.
I do have a java web application that is used for storing data about issues we faces daily.
There are many users and each user will be inserting data into it daily and by the end of day we'll gather that particular days data and then mail it to everyone.
We are using the web app to do this. But as of now web app generates consolidated data for one day when I trigger it using a button press.
And the code written to create excel sheet drafts a excel sheet and this one i mail to everyone. This web application is being run on a server.
I wish to automate this process i.e. each night at some specified time it should automatically trigger the function and generate the excel sheet and it should mail it to everyone.
I don't have much idea about how to go forward so I thought first I'll write java code to send mail and later think about triggering the function at a particular time.
I would like to know whether is there any other better way to deal with my requirement. I'am open to suggestions.
Also, the code I have written to send the mail is not working. It is giving me exception and I tried almost everything I could find but nothing is working. Could someone help me in sorting out the error.
Here's the code :
package com.email;
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendEmail {
public static void main(String[] args) {
// Recipient's email ID needs to be mentioned.
String to = "toemail#gmail.com";
// Sender's email ID needs to be mentioned
String from = "fromemail#gmail.com";
final String username = "username";//change accordingly
final String password = "password";//change accordingly
String host = "smtp.gmail.com";
Properties props = new Properties();
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.starttls.enable", "true");
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", "587");
// Get the Session object.
Session session = Session.getInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
try {
// Create a default MimeMessage object.
Message message = new MimeMessage(session);
// Set From: header field of the header.
message.setFrom(new InternetAddress(from));
// Set To: header field of the header.
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
// Set Subject: header field
message.setSubject("Testing Subject");
// Now set the actual message
message.setText("Hello, this is sample for to check send " +
"email using JavaMailAPI ");
// Send message
Transport.send(message);
System.out.println("Sent message successfully....");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
Exception that I am receiving is :
Exception in thread "main" java.lang.RuntimeException: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 587; timeout -1;
nested exception is:
java.net.UnknownHostException: smtp.gmail.com
at com.tutorialspoint.SendEmail.main(SendEmail.java:62)
Caused by: com.sun.mail.util.MailConnectException: Couldn't connect to host, port: smtp.gmail.com, 465; timeout -1;
nested exception is:
java.net.UnknownHostException: smtp.gmail.com
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2209)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:740)
at javax.mail.Service.connect(Service.java:388)
at javax.mail.Service.connect(Service.java:246)
at javax.mail.Service.connect(Service.java:195)
at javax.mail.Transport.send0(Transport.java:254)
at javax.mail.Transport.send(Transport.java:124)
at com.email.SendEmail.main(SendEmail.java:57)
Caused by: java.net.UnknownHostException: smtp.gmail.com
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:353)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:239)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:2175)
... 7 more
According to the logs you cannot reach the gmail smtp. Are you maybe behind a proxy/firewall? Did you try pinging the smtp?
For running the tasks automatically you just need to add a scheduling framework to run the code at a certain time.
You could use quartz for example
This is my code...
final String from = "demo#ourmail.com";
final String password = "demo1234";
Properties props = new Properties();
props.put("mail.smtp.host", "14.141.48.131");
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
#Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(from, password);
}
});
try {
String subject = "Registeration conformation for happy shopping";
String to = demo#gmail.com;
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse(to));
message.setSubject(subject);
message.setContent("<html>\n"
+ "<body>\n"
+ "\n"
+ "<p> you are successsfully login</p>"
+ "</body>\n"
+ "</html>", "text/html");
Transport.send(message);
System.out.println("end of utility");
} catch (Exception ex) {
System.out.println(ex);
}
After running this, an exception is generated, i.e.
javax.mail.MessagingException: Could not connect to SMTP host: 14.141.48.131, port: 25;
nested exception is:
java.net.SocketException: Permission denied: connect
Please suggest how I can handle this exception.
Your Java code looks fine. Successfully communicating with your mail server is the hard part.
Maybe you're running Java 7, and maybe (per this link) the problem can be resolved by setting this simple JVM parameter: -Djava.net.preferIPv4Stack=true.
Definitely check your firewall (make sure the SMTP port is open between your Java program and the mail server), and definitely check for any anti-virus programs that might be restricting SMTP on the mail server.
Or maybe your mail server requires SSL/TLS encrypted SMTP port 465 (instead of SMTP port 25).
Then again, maybe your ISP/internet provider doesn't permit SMTP at all.
There are a million possibilities. Talk with your network administrator. And try these SMTP troubleshooting tips (independent of debugging your Java program):
http://www.port25.com/how-to-check-an-smtp-connection-with-a-manual-telnet-session-2/
PS:
Never ever EVER!!!! post real usernames, passwords ... or IP addresses. In ANY external forum.
One of my customers is using Gmail for business (part of Google Apps) and I had to reconfigure the website I've developed so it would match the new credentials. After a bit of struggle due to TLS errors, I've managed to make the code work on localhost and on my test server (both Apache Tomcat 5.5). Everything was going smooth until I had to move it on his server (another Tomcat 5.5 as the hosting company told me). On the client's server I get the following error:
javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465;
nested exception is:
java.io.IOException: Couldn't connect using "javax.net.ssl.SSLSocketFactory" socket factory to host, port: smtp.gmail.com, 465; Exception: java.lang.reflect.InvocationTargetException
The strange thing is that on localhost and the test server the port 465 works fine, and the guys from hosting said that port is opened on their server.
The code that connects to the mailserver is:
private void initConfigParams() throws CMSGeneralException {
try {
props = System.getProperties();
String smtpHost = Messages.getDBConfString("mail.smtp.host");
String mailPort = Messages.getDBConfString("mail.smtp.port");
String socketFallback = Messages.getDBConfString("mail.smtp.socketFactory.fallback");
String enableTls = Messages.getDBConfString("mail.smtp.starttls.enable");
String authSmtp = Messages.getDBConfString("mail.smtp.auth");
String tlsRequired = Messages.getDBConfString("mail.smtp.stattls.required");
String sktFactory = Messages.getDBConfString("mail.smtp.socketFactory.class");
props.put("mail.smtp.starttls.enable", enableTls);
props.put("mail.smtp.host", smtpHost);
props.put("mail.smtp.auth", authSmtp);
props.put("mail.smtp.starttls.required", tlsRequired);
props.setProperty("mail.smtp.socketFactory.class", sktFactory);
props.setProperty("mail.smtp.socketFactory.fallback", socketFallback);
props.setProperty("mail.smtp.port", mailPort);
props.setProperty("mail.smtp.socketFactory.port", mailPort);
props.put("mail.transport.protocol", Messages.getDBConfString("mail.transport.protocol"));
Authenticator auth = null;
userName = Messages.getDBConfString("mail.username");
userPassword = Messages.getDBConfString("mail.userpassword");
if (!CMSUtils.isEmptyString(userName) && !CMSUtils.isEmptyString(userPassword)){
/* props.put("mail.smtp.auth", "true"); */
auth = new SMTPAuthenticator(userName, userPassword);
}
session = Session.getDefaultInstance(props, auth);
session.setDebug(false);
address = new InternetAddress[1];
address[0] = new InternetAddress(recipients);
mbText = new MimeBodyPart();
mbText.setContent(text, "text/html");
mp = new MimeMultipart();
mp.addBodyPart(mbText);
} catch (MessagingException e) {
e.printStackTrace();
throw new CMSGeneralException();
}
}
With the following .properties file
mail.smtp.starttls.enable=true
mail.smtp.host=smtp.gmail.com
mail.smtp.auth=true
mail.smtp.starttls.required=true
mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
mail.smtp.socketFactory.fallback=false
mail.smtp.port=465
mail.transport.protocol=smtps
mail.username=website#example.com
mail.userpassword=password
mail.from=website#example.com
mail.to=mail#example.com
I tried the other ports for GMail, 587, but it doesn't work on any of the servers. Not even port 25 won't do the trick.
So, what am I doing wrong, and what should I do to make the mailing work?
Get rid of all the socket factory properties; if you're using a reasonably recent version of JavaMail you don't need them. See the JavaMail FAQ for how to configure JavaMail to access Gmail. You'll also find debugging tips there if it still doesn't work.
Also, change Session.getDefaultInstance to Session.getInstance.
And finally, if you're setting "mail.transport.protocol" to "smtps", you need to set the other properties as "mail.smtps." properties, not "mail.smtp." properties.
It seems to you have problems with java.lang.reflect.InvocationTargetException. So, I mean it's not a network problem. May be you've specified some parameters wrong and JavaMail API routes couldn't invoke a method. May be you should also specify property mail.smtp.ssl.socketFactory.
Some documentation here http://javamail.kenai.com/nonav/javadocs/com/sun/mail/smtp/package-summary.html .
I am trying to use the Appengine Mail API to send mail from my application. I'm running the code below which executes fine without exceptions but no mail is actually sent. Here's the code:
public static void sendNotificationEmail(String subject, String message, String emailAddress) {
System.err.println("Sending mail: " + emailAddress);
Properties props = new Properties();
Session session = Session.getDefaultInstance(props, null);
try {
Message msg = new MimeMessage(session);
msg.setFrom(new InternetAddress("a#b.com", "Name"));
msg.addRecipient(Message.RecipientType.TO, new InternetAddress(emailAddress));
msg.setSubject(subject);
msg.setText(message);
Transport.send(msg);
System.err.println("done");
}
catch (Exception e) {
System.err.println(e);
}
}
a#b.com is a registered owner of the app (but not the billing administrator). Looking at the logs, "done" is printed but no email is sent.
Any ideas?
UPDATE:
Found out the emails are actually getting through but are in the spam folder. Any way to give my app more (reputation) to not be marked as spam. Our app sends out notification emails to users when something has changed in the system.
Maybe you email marked as spam because it was sent from different host, I mean that maybe it's not GMail-connected domain.
At this case, to prevent it from being marked as spam, it's very helpful to configure SPF for your domain, see google help: Creating an SPF record. It has helped me some time ago