// FIX message to send
Email email = new Email(new EmailThreadID("ID"), new EmailType(EmailType.NEW), new Subject("Test"));
Exchange exchange = producer.createExchange(ExchangePattern.InOnly);
exchange.getIn().setBody(email);
producer.process(exchange);
// Produce with no session ID specified, session ID must be in message
Producer producer2 = endpoint.createProducer();
email.getHeader().setString(SenderCompID.FIELD, acceptorSessionID.getSenderCompID());