MessagingException: 501 Syntax: HELO hostname. Very Urgent

Question

Hi,
I am getting an error message : "MessagingException: 501 Syntax: HELO hostname" when trying to send mail using Java Mail API. Can anyone plz help me. It's very urgent. I am using this code. I had using the host name as my mail server name.
try
     String host = "smtp.xxxxx.com";
          String from = "[email protected]";
          String to="[email protected]";
          String htmlText=null;
          to = fremail;
     Properties props = System.getProperties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.starttls.enable", "true");
Session session1 = Session.getDefaultInstance(props, null);
     MimeMessage message = new MimeMessage(session1);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
message.setSubject("Hai. Mail send using Java Mail");
BodyPart messageBodyPart = new MimeBodyPart();
messageBodyPart.setContent(htmlText, "text/html");
MimeMultipart multipart = new MimeMultipart("related");
multipart.addBodyPart(messageBodyPart);
message.setContent(multipart);          
Transport.send(message);
catch (Exception e)
out.print("Exception is" +e);
Plz help me.
Thanks in advance.

Answer 1

Hi,
I had already set the HOST Name using
String host="smtp.mymailserver.com";
props.put("mail.smtp.host", host);
Then also it is giving error. Plz help me and tell me wew i am doing wrong. It's very urgent. Hoping early positive response from u.
Regards,
Devom