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Message:

sending mail on linux using java

Posted by Dwayne Kemp on January 11, 2002 at 1:37 PM

> I want to send a mail using java in Linux Platform.The Machine is connected to Internet using a proxy and is behind a firewall.
> can anyone help me.

you will need the java mail package then get the activation.jar
file from sun i believe it is located in the ejb package.

you can use this code:

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
import java.io.*;
import java.net.InetAddress;
import java.util.Properties;

public class sendmail
{
String content;

public sendmail(String message)
{
content = new String(message);
}

public void postMail( String recipients[ ], String subject, String message , String from)throws MessagingException
{
//you can set this to false if you like
boolean debug = true;

//Set the host smtp address
Properties props = new Properties();
props.put("mail.smtp.host", "your smtp server");

// 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[i]);
}
msg.setRecipients(Message.RecipientType.TO, addressTo);


// Optional : You can also set your custom headers in the Email if you Want
msg.addHeader("header", "value");

// Setting the Subject and Content Type
msg.setSubject(subject);
msg.setContent(message, "text/plain");
//Transport.send(msg);
msg.saveChanges(); // implicit with send()
Transport transport = session.getTransport("smtp");
transport.connect("host","user","password");
transport.send(msg);
transport.close();

}

public static void main(String args[]) throws IOException
{
sendmail to = new sendmail("body of email");
String[] a = {"email or emails"};
try
{
to.postMail( a, "subject" , to.content , "who ever");
}
catch(MessagingException e)
{
e.printStackTrace();
}

}

you will also need to configure your host.allow file located under
/etc/hosts.allow with

smtp: "smtp server ip"