How to send the same message to two SMTP servers

Question

hi,
I need to send a message to two different SMTP servers.
I want to avoid the creation of new MimeMessage with a new Session.
the only way I've found was to keep a reference to the Properties instance that was used in the Session creation, and modify its "mail.smtp.host" property.
Is there another way? I must be missing something.
thanks,
ofer

Answer 1

hi,
I've already found the solution, so I'll post it here.
first I'll explain the purpose:
I needed to send the same message to a normal email server, and (for some of the recipients) to a special SMTP server that is on a different machine.
the following code demonstrate the solution.
thanks for your help.
ofer
----------code---------------
public class MultipleSendTest {
private final static Session server1 = createSession("somesmtp_server.com");
private final static Session _server2 = createSession("another_smtp_server.com");
public static void main(String args[]) throws Exception {
//create the message
MimeMessage m = new MimeMessage(_server1);
m.setText("body text");
m.addRecipients(Message.RecipientType.TO, "[email protected]");
m.setFrom(new InternetAddress("[email protected]"));
//send
send(m, _server1);
send(m, _server2);
private static void send(MimeMessage message, Session session) {
//for logging only
String host = session.getProperty("mail.smtp.host");
try {
Transport transport = session.getTransport("smtp");
transport.connect();
transport.sendMessage(message, message.getAllRecipients());
System.out.println("sent to " + host);
transport.close();
} catch (MessagingException e) {
System.out.println("failed to send to " + host);
private static Session createSession(String host) {
Properties properties = new Properties();
properties.setProperty("mail.smtp.host", host);
return Session.getInstance(properties);
----------code---------------