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Java Send Mail Using Gmail with Multiple Attachments

Here I am sharing a class for sending mail using Gmail SSL with multiple attachments.
Just change the gmailUsername and gmailPass with actual gmail credentials. And also change the to and from address with your desired one.
Here we have used Gmail SSL smtp port for sending mail. You can change it with your own mailing server details. 
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
Author Mridul Chatterjee
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 SendMail {
public static void main(String[] args) {
Properties props = new Properties();
props.put(””, “”);
props.put(”mail.smtp.socketFactory.port”, “465″);
props.put(”mail.smtp.auth”, “true”);
props.put(”mail.smtp.port”, “465″);
ArrayList fileNames = new ArrayList();

Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(”gmailUsername”,”gmailPass”);

try {

Message message = new MimeMessage(session);
message.setFrom(new InternetAddress(””));
message.setSubject(”Testing Subject”);
message.setText(”Dear Mail Crawler,” +
“nn No spam to my email, please!”);
     //  multipart.addBodyPart(messageBodyPart);
     //  DataSource source = new FileDataSource(filename);
    //   messageBodyPart.setDataHandler(new DataHandler(source));
    //   messageBodyPart.setFileName(filename);
       Multipart multipart = new MimeMultipart();
       BodyPart messageBodyPart = new MimeBodyPart();
       for(int i=0;i            {
                messageBodyPart = new MimeBodyPart();
                DataSource source = new FileDataSource((String)fileNames.get(i));
                messageBodyPart.setDataHandler(new DataHandler(source));


System.out.println(”Mail Sent Successfully….”);

} catch (MessagingException e) {
throw new RuntimeException(e);


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Virus f Opyum Team

Symptoms :: 
Several processes running named f or i. 
Network choked
Apache Dead
Unknown entry  * * * * * root f Opyum Team in crontab

Investigate ::
Try to kill the f process and even root will be unable to kill it. Check file named f and i in /etc or /bin or /usr/sbin directory. Try to delete, the file f  will not delete.  Some unknown .jpg files will be there in the same folder. 

Solve :: The root is unable to delete the file f because of the immutable bit in f
To remove it use ses or chattr
Follow the below steps to remove it completely.....

remove the unknown .jpg files in system folders

(kill process f) option k

#ses -i /bin/f
#rm /bin/f
#ses -i /etc/crontab
#vi /etc/crontab (and delete last line)

Precautions ::  In my case the server was hacked bu Brute-force attack
So set a good password with a combination of upper,lower case letters and special characters.

Post your feedback or any issues you may face removing the virus.  Very less number of good threads are there explaining …