Java mail api: SendFailedException when trying to send Mail via SMTP

Question

Hello,
I'm trying to send a mail via java mail api using a server that requires smtp authentication.
I'm currently using the following code:
protocol = "smtp";
host = "auth.smtp.profimailer.de";
port = 25;
String from="[email protected]";
String to="[email protected]";
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");
Authenticator auth = new PopupAuthenticator();
session=Session.getInstance(props,auth);
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from,"[email protected]"));
message.addRecipient(Message.RecipientType.TO,new InternetAddress(to,"ToName"));
message.setSubject("Hello JavaMail");
message.setText("Welcome to JavaMail");
Transport.send(message);
static class PopupAuthenticator extends Authenticator {
        public PasswordAuthentication getPasswordAuthentication() {
            return new PasswordAuthentication("e12345676", "mypass");
}When trying to run this code, I get the following exception:
D:\eclipse30RC1\workspace\ClassifyIt\bin>java -cp .;../lib/javamail.jar de.jwannenmacher.classify.TestMail > test.txt
javax.mail.SendFailedException: Send failed;
nested exception is:
javax.mail.SendFailedException: Sender "[email protected]" <jens
@jens-wannenmacher.de> was rejected: 501
at javax.mail.Transport.doSend(Transport.java:223)
at javax.mail.Transport.send(Transport.java:92)
at de.jwannenmacher.mail.pop3client.POP3Client.getAllNewMessages(POP3Cli
ent.java:176)
at de.jwannenmacher.classify.TestMail.main(TestMail.java:22)
Any suggestions on this?
Thanks and best regards,
Jens

Answer 1

Hi,
yes smtp is a standard and I think you could use this with almost every smtp server.
If your smtp server doesn't require authentication you can access it without an authenticator
I think...
Best regards,
Jens