Server requires authentication - How do I program for this?

Question

Hello,
I'm testing out a webpage I have created that will be used to send email. I have DSL service...just recently subscribed. Previously I had Dial up. The server at that time didn't require authentication, but now that I have DSL it does. I'm a bit lost as to how to update my program (I've included the snippet in the post), so that it will run correctly. I am having some difficulty.
My program looked like this :
String POP3 = "pop.windstream.net";
String SMTP = "smtp.windstream.net";
// Specify the SMTP host
Properties props = new Properties();                                           
props.put(POP3, SMTP);
// Create a mail session
Session ssn = Session.getInstance(props, null);
ssn.setDebug(true);                  
//...html to make up the body of the message
// set the from information
InternetAddress from = new InternetAddress(emailaddress, fromName);
// Set the to information
InternetAddress to = new InternetAddress(EmailAddress2, toName);
// Create the message
Message msg = new MimeMessage(ssn);
msg.setFrom(from);
msg.addRecipient(Message.RecipientType.TO, to);
msg.setSubject(emailsubject);
msg.setContent(body, "text/html");                      
Transport.send(msg);     
//....                        I did some research already, and have looked at some other forum posts. The one thing I have noted when I run my program is that the dos prompt for tomcat is showing this:
*DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smpt,com.sun.mail.smtp.SMTPTransport,Sun Microsystem, Inc]*
DEBUG SMTP: useEhlo true, useAuth false
DEBUG: SMTPTransport trying to connect to hose "localhost", port 25
My ISP provider, Windstream, assures me that port 25 is NOT blocked. Also, I've noticed that useAuth is set to false, whereas the posts I have been looking at say true. It would make sense to me for it to be set to true in my case, since my server requires authentication. But how do I do that?
I found this bit of information from another person's post :
props.setProperty("mail.smtp.auth", "true");
you also need an Authenticator like this
Authenticator auth = new Authenticator() {
private PasswordAuthentication pwdAuth = new PasswordAuthentication("myaccount", "mypassword");
protected PasswordAuthentication getPasswordAuthentication() {
pwdAuth;
Session session = Session.getDefaultInstance(props, auth);*
Post located at http://forums.sun.com/thread.jspa?forumID=43&threadID=537461
From the FAQ section of JavaMail
Q: When I try to send a message I get an error like SMTPSendFailedException: 530, Address requires authentication.
A: You need to authenticate to your SMTP server. The package javadocs for the com.sun.mail.smtp package describe several methods to do this. The easiest is often to replace the call Transport.send(msg); with
String protocol = "smtp";
props.put("mail." + protocol + ".auth", "true");
Transport t = session.getTransport(protocol);
try {
t.connect(username, password);
t.sendMessage(msg, msg.getAllRecipients());
} finally {
t.close();
You'll have to supply the appropriate username and password needed by your mail server. Note that you can change the protocol to "smtps" to make a secure connection over SSL.
One thing I have noticed in the majority of the posts is that useAuth in the tomcat dos prompt should be set to true, and not false. Mine is coming up as false. Also, I think it should be set to true because the ISP's server requires authentication for sending and receiving email.
Can you please provide me with some input on how to update my program so it will run?
Thank you in advance:)

Answer 1

Thank you for replying.
Per your advice, I made these changes to my code:
Properties props = new Properties();                                           
props.setProperty("mail.smtp.auth", "true");               
props.put("mail.pop3.host", POP3);
props.put("mail.smtp.host", SMTP);
Session ssn = Session.getInstance(props, null); The props.setProperty("mail.smtp.auth","true"); is something I found previously to posting my question. I'm assuming this is the line of code that has changed useAuth from false to true...is that correct?
I'm most pleased to report that with the changes made above, my program works! But is my code good? As soon as I start taking on clients, I will need my code to be reliable, and it needs to work with Dial Up and DSL connections.
With regards to your question about how I had found the authentication code but hadn't used it. Well, I did try it, again, this was previous to posting my question, and the compiler couldn't compile the program because of this statement - pwdAuth;
I also tried this code I had found in the JavaMail FAQ section -
String protocol = "smtp";
props.put("mail." + protocol + ".auth", "true");
Transport t = session.getTransport(protocol);
try {
t.connect(username, password);
t.sendMessage(msg, msg.getAllRecipients());
} finally {
t.close();
}But according to the compiler, t.connect(username,password); was not an available method. I checked the documentation and found that to be true. Do you have any suggestions? Looking into the documentation I find that there are 3 methods called connect that are inherited by the Transport class from javax.mail.Service.
connect()
connect(java.lang.String host, int port, java.lang.String user, java.lang.String password)
connect(java.lang.String host, java.lang.String user, java.lang.String password)
I would opt to try the third connect method, but what would I put for host?
Thank you for helping me with this issue, I'm not an expert on using the JavaMail package, at least not yet, and I appreciate the help you have provided.