Steve Poe writes:
« HTML content follows »Esa, I am researching for my boss/company. Obtaining the pros/cons on all sides is what I need to do. Why do you feel its okay to pay for others spam? What options/solutions do you have?
You missed the point: it's the advocates of all these cockamamie challenge-response proposals, they're the ones who believe everyone else should pay for their spam. Most spam carries a forged return address, and in most cases the return address is randomly picked from the same list that the spammers use for spamming, and belongs to a valid mailbox. Your challenges, therefore, will go to victims of spam forgeries. You will shift the cost for dealing with spam from you, to the spam forgery victim.
Many spam blacklists consider an automated challenge-response mechanism to be mail abuse, and grounds for automatic blacklisting. Should you choose to implement it, some with a grudge against your company would then send you a bunch of junk carrying a forged return address of known spamtraps. Your dumb autoresponder then proceeds to forward the spam to the spamtrap, and your mail server gets blacklisted. Good luck trying to explain to your customers why their Internet provider no longer accepts mail from you.
Just the fact that you see a bunch of scripts on the Internet for implementing challenge-response systems does not mean anything. You'll also see plenty of other stuff that's clearly of very little use to anyone. Just because it's available to download over the Internet speaks nothing of its usefulness, or sensibility.
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