Problem with PDF attachment - need to send as "application/pdf" - Urgent!

Question

I have code to email a created PDF but when the email is received the attachment is being removed by some kind of SMTPO firewall (I assume at my ISP). It says that attachment type "application/octet" with that file extension (.pdf) is not allowed. How do I set the mime type of the attachment to be "application/pdf"?
My code I use is similar to this at the moment:-
// Part one is the text
BodyPart bodyPart = new MimeBodyPart();
bodyPart.setText("Some text");
multipart.addBodyPart(bodyPart);
// Part two is the attachment
bodyPart = new MimeBodyPart();
DataSource sourceFile = new FileDataSource(FileName);
bodyPart.setDataHandler(new DataHandler(sourceFile));
bodyPart.setFileName("FileName.pdf");
multipart.addBodyPart(bodyPart);
message.setContent(multipart);Any help would be greatly apprecieated as I need to fix asap!!!

Answer 1

i tried like this,but it will giving error like this
javax.mail.MessagingException: IOException while sending message;
nested exception is:
                    javax.activation.UnsupportedDataTypeException: no object DCH for MIME type application/pdf
my code is :
MimeBodyPart pdfpart=new MimeBodyPart();
pdfpart.setContent(message,"application/pdf");
pdfpart.addHeaderLine("Content-Type: application/pdf; charset=\"iso-8859-1\"");
pdfpart.addHeaderLine("Content-Transfer-Encoding: quoted-printable");
Multipart mp2=new MimeMultipart();
for( int i = 0; i < m_attachments.length; i++ )
// attachments= str+"/"+attachments[i];
MimeBodyPart messageBodyPart = new MimeBodyPart();
DataSource fileDataSource =new FileDataSource(m_attachments[i]);
InputStream fi = fileDataSource.getInputStream();
DataSource fileDataSource1 = new ByteArrayDataSource(fi, "application/pdf");
messageBodyPart.setDataHandler(new DataHandler(fileDataSource1));
// messageBodyPart.setFileName(attachments[i]);
messageBodyPart.setFileName(m_attachments[i].getName());
mp2.addBodyPart(messageBodyPart);