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If that is the case it would be cool if your email client had a "pretend bad email address" type function which sends a fake bounce email.

• jonknee 18y ago
  Many clients do have that feature. Mail.app has "Bounce" in the contextual menu. Another handy one in there that's not often used (or always duplicated) is redirect.
  • tlrobinson 18y ago
    I forget where I heard this, but supposedly the Mail "Bounce" feature does more harm than good. Whatever method it uses to bounce is easily identifiable as fake, so it's only good for tricking humans who don't know any better.
    • notauser 18y ago
      It does way more harm than good. Spam is sent mostly from forged addresses, so when you bounce the message it just gets sent on to the poor sucker who owns the mail address that was forged. One of my domains was used as the 'from' address for a big spam run, and I would cheerfully strangle _everyone_ who bounces spam after recieving 90,000 or so returned mails that had not originated from my mail server in the first place.