All this "you didn't get my email?" situation will never happen to most of you. After some reading last night this is how I think it works:
1. I send you an e-mail with a from: address of support@paypal.com
2. Hotmail see's that the return path is from spammers.com servers
3. Hotmail asks paypal.com this, "mr. paypal machine sir, is spammers.com allowed to send email with your domain name as the from: address?"
4. Two possible answers: "no" and "yes, only if that machine's address is x.x.x.x"
So now you can understand where the effort goes into stopping spam. But I also found a weak point.
This check happens only if the return path domain differs from the from: address. Most amateur spammers will be taken out, but I'm sure spam script writers will easily find a way to spoof the return path too. And then this check will never happen!
maybe he just memorized 13th root of all 3 digit numbers? The range is now 899, sort of.
Someone already mentioned his memorization skills. I think this was the trick. Someone memorized tons and tons of digits of pi. So when someone starts reading a random section of digits he can recite the next hundred or so. Doesn't mean he calculates pi every time.
His action is not trying to stop it from happening. And it is sharing. If I bootleg a CD for you that is made with shitty 128kbps mp3s then that is sharing. Don't expect me to buy you a CD.
Slashdot Mirror
All this "you didn't get my email?" situation will never happen to most of you. After some reading last night this is how I think it works:
1. I send you an e-mail with a from: address of support@paypal.com
2. Hotmail see's that the return path is from spammers.com servers
3. Hotmail asks paypal.com this, "mr. paypal machine sir, is spammers.com allowed to send email with your domain name as the from: address?"
4. Two possible answers: "no" and "yes, only if that machine's address is x.x.x.x"
So now you can understand where the effort goes into stopping spam. But I also found a weak point.
This check happens only if the return path domain differs from the from: address. Most amateur spammers will be taken out, but I'm sure spam script writers will easily find a way to spoof the return path too. And then this check will never happen!
maybe he just memorized 13th root of all 3 digit numbers? The range is now 899, sort of.
Someone already mentioned his memorization skills. I think this was the trick. Someone memorized tons and tons of digits of pi. So when someone starts reading a random section of digits he can recite the next hundred or so. Doesn't mean he calculates pi every time.
His action is not trying to stop it from happening. And it is sharing. If I bootleg a CD for you that is made with shitty 128kbps mp3s then that is sharing. Don't expect me to buy you a CD.