<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML ><HEAD ><TITLE >Introduction</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Spam Filtering for Mail Exchangers" HREF="index.html"><LINK REL="PREVIOUS" TITLE="Spam Filtering for Mail Exchangers" HREF="index.html"><LINK REL="NEXT" TITLE="Purpose of this Document" HREF="intro-purpose.html"></HEAD ><BODY CLASS="preface" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Spam Filtering for Mail Exchangers: </TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="index.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="intro-purpose.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="preface" ><H1 ><A NAME="AEN53" ></A >Introduction</H1 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT >1. <A HREF="intro-purpose.html" >Purpose of this Document</A ></DT ><DT >2. <A HREF="intro-audience.html" >Audience</A ></DT ><DT >3. <A HREF="intro-updates.html" >New versions of this document</A ></DT ><DT >4. <A HREF="intro-history.html" >Revision History</A ></DT ><DT >5. <A HREF="intro-credits.html" >Credits</A ></DT ><DT >6. <A HREF="intro-feedback.html" >Feedback</A ></DT ><DT >7. <A HREF="intro-translations.html" >Translations</A ></DT ><DT >8. <A HREF="intro-copyright.html" >Copyright information</A ></DT ><DT >9. <A HREF="intro-prerequisites.html" >What do you need?</A ></DT ><DT >10. <A HREF="intro-conventions.html" >Conventions used in this document</A ></DT ><DT >11. <A HREF="intro-organization.html" >Organization of this document</A ></DT ></DL ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="index.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="intro-purpose.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Spam Filtering for Mail Exchangers</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Purpose of this Document</TD ></TR ></TABLE ></DIV ></BODY ></HTML >