Sending e-mail exception

Question

hi
I am using this servlet in order to send a mail:
import java.io.*;
import java.net.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.mail.*;
import javax.mail.internet.*;
public class SendMail extends HttpServlet {
    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    public void destroy() {
    /** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        out.close();
    /** Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        // processRequest(request, response);
        PrintWriter out = response.getWriter();
        String senderhost=request.getParameter("outserver"); //
        final String senderlogin=request.getParameter("username"); //
        final String senderpassword=request.getParameter("password");
        String from=request.getParameter("from");
        String to=request.getParameter("to"); //
        String subject=request.getParameter("subject");
        String cc=request.getParameter("cc");
        String bcc=request.getParameter("bcc");
        String text=request.getParameter("content"); //
        boolean success=true;
        if ((senderhost==null)||(senderlogin==null)||(senderpassword==null)) {
            success=false;
            out.println("Invalid senderhost, senderlogin or senderpassword.");
            out.print("Failure");
            out.close();
        } else {
            // Get system properties
            Properties props = System.getProperties();
            // Setup mail server
            props.put("mail.smtp.host", senderhost);
            javax.mail.Authenticator pa = null; //default: no authentication
            props.put("mail.smtp.auth", "true");
            pa = new javax.mail.Authenticator(){
                public javax.mail.PasswordAuthentication getPasswordAuthentication() {
                    return new javax.mail.PasswordAuthentication(senderlogin, senderpassword);
            // Get session
            Session session = Session.getDefaultInstance(props, pa);
            // Define message
            MimeMessage message = new MimeMessage(session);
            //System.out.print(from+subject+text);
            try {
                message.setFrom(new InternetAddress(from));
                String[] str = to.split(",");     //make an array containig all the TO adress (two adress are sepereted with ",".
                message.setRecipient(Message.RecipientType.TO,new InternetAddress(str[0], false));
                for (int i=1; i< str.length;i++) {
                    message.addRecipient(Message.RecipientType.TO,new InternetAddress(str, false));
// message.setRecipient(Message.RecipientType.TO,new InternetAddress(to, false));
if ( cc!= null) {
str = cc.split(",");
message.setRecipient(Message.RecipientType.CC,new InternetAddress(str[0], false));
for (int i=1; i< str.length;i++) {
message.addRecipient(Message.RecipientType.CC,new InternetAddress(str[i], false));
// message.setRecipient(Message.RecipientType.TO,new InternetAddress(cc, false));
if (bcc!=null) {
str = bcc.split(",");
message.setRecipient(Message.RecipientType.BCC,new InternetAddress(str[0], false));
for (int i=1; i< str.length;i++) {
message.addRecipient(Message.RecipientType.BCC,new InternetAddress(str[i], false));
message.setSubject(subject);
message.setText(text);
// Send message
Transport.send(message);
} catch (MessagingException e) {
success=false;
out.println("Messaging Exception was thrown.");
} finally {
if (success) out.print("Success");
else out.print("Failure");
out.close();
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
/** Returns a short description of the servlet.
public String getServletInfo() {
return "Short description";
the problem is that sometimes the servlet works great, and sometimes it throws this exception:
500 Servlet Exception
java.lang.SecurityException: Access to default session denied
     at javax.mail.Session.getDefaultInstance(Session.java:292)
     at SendMail.doGet(SendMail.java:71)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:126)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:103)
     at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:113)
     at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:211)
     at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:177)
     at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:221)
     at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:263)
     at com.caucho.server.port.TcpConnection.run(TcpConnection.java:331)
     at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:464)
     at com.caucho.util.ThreadPool.run(ThreadPool.java:408)
     at java.lang.Thread.run(Thread.java:534)
Resin-3.0.8 (built Tue, 08 Jun 2004 02:25:40 PDT)
Does anyone knows why this is happend??
Is it something wrong with my code??
thanks, Naor

Answer 1

Session session = Session.getDefaultInstance(props, pa);This is the line of code where the exception occurred, isn't it? Replace it bySession session = Session.getInstance(props, pa);for a quick fix.