IBM AH0QXML User Guide - Page 9

© Copyright IBM Corp. 2003. All rights reserved.

vii

Preface

In this IBM Redbook we describe how you can use IBM Lotus Domino 6 to

prevent and manage

“

spam.

”

We begin by describing and categorizing spam, which is the commonly used

term for unsolicited commercial e-mail. We discuss ways to prevent spam,

outlining different techniques available to avoid and block spam.

We then explain how anti-spam control and management work can be divided

between servers, between server tasks, and between administrators and end

users. We also describe the anti-spam architecture of the Domino 6 messaging

environment.

Anti-spam features of Domino 6 are presented in detail. They include the ability

to control connections from spammers and the delivery of spam, and protecting

against the use of your server as an open relay. We also discuss using mail file

rules and server mail rules to prevent spam.

Finally, we highlight some of the business partner products available to further

address the spam problem. These products fall into two categories: those that

run on a Domino server, and those that operate as separate anti-spam servers

and gateways. We include a number of examples of each type, along with

references to help you obtain more information directly from them.

This redbook is written primarily for Lotus Domino administrators who want to

prevent and manage spam in their environments. It is also useful as a basic

introduction to the topic of spam.

The team that wrote this redbook

This redbook was produced by a team of specialists from around the world

working at the International Technical Support Organization, Poughkeepsie

Center.

Tommi Tulisalo

is a project leader for the International Technical Support

Organization at Cambridge, Massachusetts. He manages projects whose

objective is to produce redbooks on all areas of Lotus Software products. Before

joining the ITSO in 2001, he was an IT Architect for IBM Global Services in

Finland, designing solutions for customers, often based on Lotus software.

Section	Page
Front cover	1
Contents	5
Notices	7
Trademarks	8
Preface	9
The team that wrote this redbook	9
Become a published author	11
Comments welcome	12
Chapter 1. Introduction	13
1.1 Definition of spam	14
1.2 Categorizing spam	14
Chapter 2. Preventing unwanted e-mail and spam	19
2.1 Spam avoidance techniques	20
2.1.1 Passive harvesting attacks	20
2.1.2 Avoiding harvesting	21
2.1.3 Confusing the harvesters	22
2.1.4 Inform Users	22
2.2 How to block spam	24
2.2.1 At the gateway	25
2.2.2 At the server	25
2.2.3 By the end user	26
2.2.4 Selecting the best approach	26
2.2.5 Managing the ongoing anti-spam campaign	27
2.2.6 Summary	28
Chapter 3. Domino 6 anti-spam architecture	29
3.1 The Domino messaging environment	30
3.2 Domino 6 messaging components	32
3.2.1 SMTP Listener/Server	33
3.2.2 Router	35
3.3 Domino 6 anti-spam configuration	35
3.3.1 Server configuration features	36
3.3.2 User configuration features	37
3.4 Common problems and solutions	37
Chapter 4. Domino 6 Server anti-spam features	41
4.1 How to detect spam	42
4.1.1 Examining the message properties	42
4.1.2 Separating legitimate e-mail from spam based on content	43
4.2 Controlling connections from spammers	44
4.2.1 DNS Blacklist filters	44
4.2.2 Inbound Intended Recipients Controls	48
4.2.3 Disable routing mail to groups	51
4.2.4 Inbound connection controls	53
4.2.5 Inbound sender controls	54
4.3 Controlling delivery of spam	57
4.3.1 Server mail rules	57
4.4 Controlling use of your server as a relay	66
4.4.1 Inbound relay controls	66
4.4.2 Inbound relay enforcement	71
4.5 Protecting your Domino server from active address harvesting attacks	74
4.5.1 SMTP harvesting attacks	74
4.5.2 Spam mail bombing	74
4.5.3 Direct SMTP RCPT TO harvesting	74
4.5.4 Defending against active attacks	75
Chapter 5. Using mail file rules to prevent spam	77
5.1 Distinguishing between spam and legitimate e-mail	78
5.2 Mail file rules	80
5.2.1 Setting up mail file rules	80
5.2.2 Developing anti-spam mail file rules	83
5.2.3 Viewing mail rules and the evaluation sequence	89
5.2.4 Monitoring mail file rules	90
Chapter 6. Third party anti-spam products	93
6.1 Anti-spam products for Notes and Domino	94
6.1.1 spamJam for Lotus Notes and Domino	94
6.1.2 SpamEraser for Lotus Notes and Domino 6	97
6.1.3 iQ.Suite	100
6.1.4 ScanMail for Lotus Notes with eManager	101
6.1.5 XM SpamStop	104
6.1.6 Other anti-spam products for Notes and Domino	106
6.2 Anti-spam server and gateway products and services	106
6.2.1 BrightMail Anti-Spam 4.0 from BrightMail, Inc.	106
6.2.2 ActiveState PureMessage	107
6.2.3 Trend Micro Inc. products	109
6.2.4 Other anti-spam server or gateway products and services	110
Related publications	111
IBM Redbooks	111
Referenced Web sites	111
How to get IBM Redbooks	112
IBM Redbooks collections	112
Index	113

IBM AH0QXML User Guide - Page 9

Preface, The team that wrote this redbook

Page 9 highlights