Retrieve from POP3 and send via SMTP
Hello!
I'm working on a POP3 mail fetcher: a program which downloads messages from a POP3 server and delivers them to an SMTP one.
I found a problem trying to send the message I get from a POP3 folder, like:
Message[] messages = folder.getMessages();
for(Message message : messages)
Transport.send(message);
I always got an error about POP3Message being read only.
The solution I found is:
Message[] messages = folder.getMessages();
for(Message message : messages) {
MimeMessage myMessage = new MimeMessage((MimeMessage)message);
Transport.send(myMessage);
}
Is it correct? Is there a better way?
Thanks
# 1
Transport.send is going to call Message.saveChanges to make sure the
Message-ID for the message is updated. If you want to send the message
using the same Message-ID and the same recipients (in which case isn't it
just going to go back to the same mailbox you fetched it from?), you'll need
to use the Transport.sendMessage method, which avoids the call to saveChanges.
See the JavaMail FAQ for how to use that method.
Let me know if that doesn't work.
# 2
Hello!
Thanks: using the method you suggested, it works perfectly!
transport = session.getTransport("smtp");
transport.connect();
transport.sendMessage(message, message.getAllRecipients());
transport.close();
As I change SMTP server (using the internal one) in my session properties, the message is delivered to a different server.
bye
