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SpamAssassin by Alistair McDonald

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Chapter 1. Introducing Spam

Spam is an often-used term, but as with many terms, it means different things to different people. This chapter defines the term 'spam' as used in this book and reviews its history. By examining the economics and costs involved with spam, we will explain why spam has become so invasive to modern computing. Finally, we will describe the current legal position against spam.

Defining Spam

Spam, in computing terms, means something unwanted. It has normally been used to refer to unwanted email or Usenet messages, and it is now also being used to refer to unwanted Instant Messenger (IM) and telephone Short Message Service (SMS) messages. Spam email is unwanted, uninvited, and inevitably promotes something for sale. Often the ...

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