JavaMail: Problem send mail to other host

[Haroldo Nascimento]

Hi,
I send the mails to other counts belows the server of my company. When I send the mails using JavaMail to my count in other host ([email protected]) I recieve this eeror message:
javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.SendFailedException: Invalid Addresses;
nested exception is:
class javax.mail.SendFailedException: 553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
at javax.mail.Transport.send0(Transport.java:218)
at javax.mail.Transport.send(Transport.java:80)
at net.upaid.mail.MailSender.execute(MailSender.java:80)
at net.upaid.mail.MailSender.main(MailSender.java:130)
What I forget. Where is the error ?
Thanks.

[Timmy Marks]

It appears to me that the mail program isn't allowed to send to that address. You probably need to talk to the system admin to allow it, or choose another address.

[Haroldo Nascimento]

What I think stranger is that I did not submit any password and account to server Mail to try send the mail. Thus, I can send e-mail to other account of mey Mai Server, BUT dont send to other server as hotmail, yahoo.
I will have that authentic in getInstrance() of Session to it works ??
My code is here:
props = System.getProperties();
props.put("mail.smtp.host", mailHost);

// Obtem a sess�o com valor Autenticador igual null
session = Session.getInstance(props, null);
session.setDebug(true);

msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
//msg.setFrom();
msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to, "111"));
//msg.setRecipients(Message.RecipientType.CC,InternetAddress.parse(cc, "22"));
msg.setSubject(subject);
collect(msg);
msg.setHeader("X-Mailer", mailer);
msg.setSentDate(new Date());
// send the thing off
Transport.send(msg);

thanks