Evolution 1.4 Preview 2 Released

If some address doesn't exist, must be it's mail server which bounce the mail. Your mail client can't fake an "address doesn't exist" because your server already said to the sender server that this mail does actually exist.

You can fake the mail subject, from, body, but you can't fake the headers put by intermediate mail servers which actually say if it's a real bounce or a fake bounce...

In fact, if you try to fake an "address doesn't exist" for spam, you can get:

1. The "From:" is false, so your fake will be lost (and in fact it's possible that you get an "address doen's exist" ;)

2. The "From:" is true, so your 'fake' will be identified as a fake by spammers and they will be sure that your address not only exists but also is readed, and will continue spamming even more.