PROBLEMA EM ENVIAR EMAIL ! urgente

//package HDI.kernel.email;

import javax.mail.*;   
import javax.mail.internet.*;
import java.util.Properties;   

public class Menssageiro {
	public static void SendHtmlMail(String De, String Para,String Assunto,String Mensagem,String Usuario,String Senha) throws Exception{
		System.out.println("Mensageiro HDI Disparando Envio de e-mail em SendHtmlMail...");
        Properties props = new Properties();
        props.setProperty("mail.smtp.transport.protocol", "smtp");
        props.setProperty("mail.smtp.host", "mail.kawakami.com.br");
        props.setProperty("mail.smtp.user", Usuario);
        props.setProperty("mail.smtp.password", Senha);

        props.setProperty("mail.smtp.auth", "true"); 
        props.setProperty("mail.smtp.debug", "true");  
  

        
        Session mailSession = Session.getDefaultInstance(props, null);
        mailSession.setDebug(true);
        Transport transport = mailSession.getTransport();

        MimeMessage message = new MimeMessage(mailSession);
        message.setSubject(Assunto);
        message.setFrom(new InternetAddress(De));
        message.setContent(Mensagem,"text/html");
        message.addRecipient(Message.RecipientType.TO,
        new InternetAddress(Para));

        transport.connect();

        transport.sendMessage(message,message.getRecipients(Message.RecipientType.TO));
        transport.close();
	}
	/*public static void main(String args[]){
		System.out.println("Mensageiro HDI Disparando Envio de e-mail em SendHtmlMail...");
	}*/
}

Mensageiro HDI Disparando Envio de e-mail em SendHtmlMail...
DEBUG: setDebug: JavaMail version 1.4.1
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth false
DEBUG SMTP: trying to connect to host "mail.kawakami.com.br", port 25, isSSL false
220 mail1.unisite.com.br NO UCE ESMTP
DEBUG SMTP: connected to host "mail.kawakami.com.br", port: 25

EHLO cpd
250-mail1.unisite.com.br
250-PIPELINING
250-SIZE 35840000
250-ETRN
250-AUTH LOGIN PLAIN
250-AUTH=LOGIN PLAIN
250 8BITMIME
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "SIZE", arg "35840000"
DEBUG SMTP: Found extension "ETRN", arg ""
DEBUG SMTP: Found extension "AUTH", arg "LOGIN PLAIN"
DEBUG SMTP: Found extension "AUTH=LOGIN", arg "PLAIN"
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: use8bit false
MAIL FROM:<[email removido]>
250 Ok
RCPT TO:<[email removido]>
554 Service unavailable; Client host [189.111.162.97] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=189.111.162.97
DEBUG SMTP: Invalid Addresses
DEBUG SMTP:   [email removido]
DEBUG SMTP: Sending failed because of invalid destination addresses
RSET
250 Ok
javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
	com.sun.mail.smtp.SMTPAddressFailedException: 554 Service unavailable; Client host [189.111.162.97] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=189.111.162.97

	at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1294)
	at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:635)
	at HDI.kernel.email.Menssageiro.SendHtmlMail(Menssageiro.java:28)
	at TestaEmail.main(TestaEmail.java:13)
Caused by: com.sun.mail.smtp.SMTPAddressFailedException: 554 Service unavailable; Client host [189.111.162.97] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=189.111.162.97

	at com.sun.mail.smtp.SMTPTransport.rcptTo(SMTPTransport.java:1192)
	... 3 more
javax.mail.SendFailedException: Invalid Addresses;
  nested exception is:
	com.sun.mail.smtp.SMTPAddressFailedException: 554 Service unavailable; Client host [189.111.162.97] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=189.111.162.97