David Skoll

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This article will describe how spammers can get away with spamming, why spam is such a problem, and why it's likely to remain a problem for quite a while. However, it's not all bad news; I'll give you concrete tips for reducing spam and lowering the cost of spam to your organization. As an added benefit, some of the techniques serve to increase spammers' costs. How Internet E-Mail Works To understand spam, we first have to understand how e-mail flows across the Internet. Suppose Alice wants to e-mail Bob; Figure 1 shows how it might work. Alice sits down at her computer and starts her Mail User Agent (MUA). This is simply the technical term for Evolution, Outlook, Pine, or whatever program Alice uses to create and send e-mail. Alice composes her e-mail and then clicks "Send." Alice's MUA contacts her service provider's SMTP server. SMTP (Simple Mail Transfer Protoco... (more)