TechTheft

Building a DNSBL

You've Got Spam! Part 1 - What is it? Where does it come from? -
Email is perhapse the most important communications breakthrough since the telegraph... ... from home users PCs to large network servers run by major corporations ... ... the whole system is basically melting down under the spam load ...

You've Got Spam! Part 2 - How is it reaching your inbox? Why do they do it? Spam is Everywhere... ... there are four ways of harvesting email addresses ... ... buying lists from unscrupulous servers ... ... does anybody actually make anything from junk ... like viagra? ... ... sending 80 million spams a day each ... ... one sale in a million ... ... at $40 a pop, thats hundreds in sales a day ...

You've Got Spam! Part 3 - What can we do about it?