Milters are among the most powerful antispamming tools available. Until now, there has been no clear and helpful resource for you to learn how to set up and use Milters. sendmail Milters: A Guide for Fighting Spam is the first in-depth guide to writing powerful Milters to block even the cleverest spammers.
Part I The nefarious spam problem 1
Chapter 1 Gorilla versus guerilla 3
Chapter 2 The characteristics of spam email 11
Part II Creating a test environment 41
Chapter 3 Setting up a bait machine 43
Chapter 4 Baiting the hook 61
Chapter 5 Preventive measures 75
Part III The parts of a sendmail milter 83
Chapter 6 The roles and flow of a milter 85
Chapter 7 The milter-library 97
Chapter 8 The xxfi handler milter functions 151
Part IV Nuts and bolts 205
Chapter 9 Milters and the environment 207
Chapter 10 User and temporal feedback 231
Chapter 11 Handy routines for the message body 255
Author Description
Bryan Costales has been involved with sendmail for more than fifteen years. He is the author of senmail, Third Edition (O’Reilly,2003), and book on C programming and UNIX communications.
Marcia Flynt has twenty-five years of experience in software engineering, including managing email development for opt-in, custom email businesses.