qmail: An Alternative to Send Mail

Table of Contents

Preface; What's Inside?; Style Conventions; Examples and Patches; Comments and Questions; Acknowledgments; Part I: Introduction to Qmail; Chapter 1: Internet Email; 1.1 Mail Basics; 1.2 Mailstore; 1.3 The Structure of Internet Mail; Chapter 2: How Qmail Works; 2.1 Small Programs Work Together; 2.2 What Does a Mail Transfer Agent (MTA) Do?; 2.3 The Pieces of Qmail; Chapter 3: Installing Qmail; 3.1 Where to Find Qmail; 3.2 Creating the Users and Groups; 3.3 Configuring and Making the Software; 3.4 Patching Qmail; Chapter 4: Getting Comfortable with Qmail; 4.1 Mailboxes, Local Delivery, and Logging; 4.2 An Excursion into Daemon Management; 4.3 Setting Up the Qmail Configuration Files; 4.4 Starting and Stopping Qmail; 4.5 Incoming Mail; 4.6 Procmail and Qmail; 4.7 Creating Addresses and Mailboxes; 4.8 Reading Your Mail; 4.9 Configuring Qmail's Control Files; 4.10 Using ~alias; 4.11 fastforward and /etc/aliases; Chapter 5: Moving from Sendmail to Qmail; 5.1 Running Sendmail and Qmail in Parallel; 5.2 User Issues; 5.3 System Issues; 5.4 Converting Your Aliases File; 5.5 Trusted Users; Chapter 6: Handling Locally Generated Mail; 6.1 qmail-queue; 6.2 Cleaning Up Injected Mail; 6.3 Accepting Local Mail from Other Hosts; 6.4 Distinguishing Injected from Relayed Mail; Chapter 7: Accepting Mail from Other Hosts; 7.1 Accepting Incoming SMTP Mail; 7.2 Accepting and Cleaning Up Local Mail Using the Regular SMTP Daemon; 7.3 Dealing with Roaming Users; 7.4 SMTP Authorization and TLS Security; 7.5 POP-before-SMTP; Chapter 8: Delivering and Routing Local Mail; 8.1 Mail to Local Login Users; 8.2 Mail Sorting; Chapter 9: Filtering and Rejecting Spam and Viruses; 9.1 Filtering Criteria; 9.2 Places to Filter; 9.3 Spam Filtering and Virus Filtering; 9.4 Connection-Time Filtering Tools; 9.5 SMTP-Time Filtering Tools; 9.6 Delivery Time Filtering Rules; 9.7 Combination Filtering Schemes; Part II: Advanced Qmail; Chapter 10: Local Mail Delivery; 10.1 How Qmail Delivers Local Mail; 10.2 Mailbox Deliveries; 10.3 Program Deliveries; 10.4 Subaddresses; 10.5 Special Forwarding Features for Mailing Lists; 10.6 The Users Database; 10.7 Bounce Handling; Chapter 11: Remote Mail Delivery; 11.1 Telling Local from Remote Mail; 11.2 qmail-remote; 11.3 Locating the Remote Mail Host; 11.4 Remote Mail Failures; 11.5 Serialmail; Chapter 12: Virtual Domains; 12.1 How Virtual Domains Work; 12.2 Some Common Virtual Domain Setups; 12.3 Some Virtual Domain Details; Chapter 13: POP and IMAP Servers and POP Toasters; 13.1 Each Program Does One Thing; 13.2 Starting the Pop Server; 13.3 Testing Your POP Server; 13.4 Building POP Toasters; 13.5 Picking Up Mail with IMAP and Web Mail; Chapter 14: Mailing Lists; 14.1 Sending Mail to Lists; 14.2 Using Ezmlm with qmail; 14.3 Using Other List Managers with Qmail; 14.4 Sending Bulk Mail That's Not All the Same; Chapter 15: The Users Database; 15.1 If There's No Users Database; 15.2 Making the Users File; 15.3 How Qmail Uses the Users Database; 15.4 Typical Users Setup; 15.5 Adding Entries for Special Purposes; Chapter 16: Logging, Analysis, and Tuning; 16.1 What Qmail Logs; 16.2 Collecting and Analyzing Qmail Logs with Qmailanalog; 16.3 Analyzing Other Logs; 16.4 Tuning Qmail; 16.5 Tuning to Deal with Spam; 16.6 Looking at the Mail Queue with qmail-qread; Chapter 17: Many Qmails Make Light Work; 17.1 Tools for Multiple Computers and Qmail; 17.2 Setting Up mini-qmail; Chapter 18: A Compendium of Tips and Tricks; 18.1 Qmail Won't Compile; 18.2 Why Qmail Is Delivering Mail Very Slowly; 18.3 Stuck Daemons and Deliveries; 18.4 Mail to Valid Users Is Bouncing or Disappearing; 18.5 Mail Routing; 18.6 Local Mail Delivery Tricks; 18.7 Delivering Mail on Intermittent Connections; 18.8 Limiting Users' Mail Access; 18.9 Adding a Tag to Each Outgoing Message; 18.10 Logging All Mail; 18.11 Setting Mail Quotas and Deleting Stale Mail; 18.12 Backing Up and Restoring Your Mail Queue; Appendix A: A Sample Script; A.1 A Mail-to-News Gateway; Appendix B: Online Qmail Resources; B.1 Web Sites; B.2 Mailing Lists; Colophon;

John R. Levine writes, lectures, and consults on Unix and compiler topics. He moderates the online comp.compilers discussion group at Usenet. He worked on Unix versions Lotus 1-2-3 and the Norton Utilities and was one of the architects of AIX for the IBM RT PC. He received a Ph.D in computer science from Yale in 1984.