Java EE (Java Enterprise Edition) General Discussion

hi friends...

i m new in java mail api..so please identify and enlight the minor mistakes..

actually how much i know,,for sending a mail to a perticular address we require a mail server and an account in that mail server and then one can send an email from that perticular account to a valid another email account made in any mail server..am i right upto this??
i used an yahoo mail server to send mail from my own yahoo account and it is working fine..
as below the snippet .i m using ....."mymailid@yahoo.com"

     public class Registrationform extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
    /* (non-Java-doc)
	 * @see javax.servlet.http.HttpServlet#HttpServlet()
	 */
	 private static final String emailMsgTxt = "hi hwo r u??.";
		private static final String emailSubjectTxt = " Confirmation Subject";
		private static final String emailFromAddress = "santosh_ipsacademy10@yahoo.com";

//		 Add List of Email address to who email needs to be sent to
		private static final String[] emailList = {"frndmailid@rediff.com", "mymailid@gmail.com"};
	public Registrationform() {
		super();
	}   	
	
		protected void doGet(HttpServletRequest request, HttpServletResponse resp) throws ServletException, IOException {
		// TODO Auto-generated method stub
		resp.setContentType("text/html");
		PrintWriter out = resp.getWriter();
		out.println("<h1>Webmail</h1>");
	
		SendMailUsingAuthentication smtpMailSender = new SendMailUsingAuthentication();
	try{	
		smtpMailSender.postMail( emailList, emailSubjectTxt, emailMsgTxt, emailFromAddress);
		
	}catch(MessagingException e){out.println(e);}	
	}  	
	
		protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}   	  	    
}
 class SendMailUsingAuthentication
	{

	  private static final String SMTP_AUTH_USER = "santosh_ipsacademy10";
		 
		private static final String SMTP_AUTH_PWD = "password_of_this_account";
		private static final String SMTP_HOST_NAME = "smtp.mail.yahoo.com";

	public void postMail( String recipients[ ], String subject,
			String message , String from) throws MessagingException
			{
			boolean debug = false;

//			Set the host smtp address
			Properties props = new Properties();
			props.put("mail.smtp.host", SMTP_HOST_NAME);
			props.put("mail.smtp.auth", "true");

			Authenticator auth = new SMTPAuthenticator();
			Session session = Session.getInstance(props, auth);

			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);

			}

			msg.setRecipients(Message.RecipientType.TO, addressTo);





//			Setting the Subject and Content Type

			msg.setSubject(subject);

			msg.setContent(message, "text/plain");

			Transport.send(msg);

			System.out.println("mail sent");

			}

	private class SMTPAuthenticator extends javax.mail.Authenticator

	{

	public PasswordAuthentication getPasswordAuthentication()

	{

	return new PasswordAuthentication(SMTP_AUTH_USER,SMTP_AUTH_PWD );

	}

	}

	}


? i m making an mail application and i want to use an email address(from where i m sending mail) like this "mymailid@mychoice.com"  not a predifined mail id like "mymailid@yahoo.com".

 will i need a different mail server or i can achieve this with this server only  what  is ur opinion ??if it is possible then please write ur snippet  if u would like or give me a brief idea..

? how it is possible to create an account with mail id like "mymailid@mychoice.com" in any mail server .not like "mymailid@yahoo.com" as if i m using yahoo mail server.



waiting for quick reply
 
thanks in adcance