Polyteknisk Boghandel

This complete guide to installing, configuring and using qmail to manage Unix-based mail systems explores how this alternative to sendmail can solve specific mail-handling problems. qmail concentrates on common tasks like moving a sendmail setup to qmail, or setting up a "POP toaster", a system that provides mail service to a large number of users on other computers sending and retrieving mail remotely. The book also fills some crucial gaps in existing documentation, detailing exactly what the core qmail software does, how it routes and queues incoming mail, how it routes mail for local or remote delivery, precisely how it interprets a .qmail file for local delivery, and how it schedules remote deliveries and decides if and when to retry failures.

Preface

Part I. Introduction to Qmail
1. Internet Email Mail Basics Mailstore The Structure of Internet Mail
2. How Qmail Works Small Programs Work Together What Does a Mail Transfer Agent (MTA) Do? The Pieces of Qmail
3. Installing Qmail Where to Find Qmail Creating the Users and Groups Configuring and Making the Software Patching Qmail
4. Getting Comfortable with Qmail Mailboxes, Local Delivery, and Logging An Excursion into Daemon Management Setting Up the Qmail Configuration Files Starting and Stopping Qmail Incoming Mail Procmail and Qmail Creating Addresses and Mailboxes Reading Your Mail Configuring Qmail's Control Files Using ~alias fastforward and /etc/aliases
5. Moving from Sendmail to Qmail Running Sendmail and Qmail in Parallel User Issues System Issues Converting Your Aliases File Trusted Users
6. Handling Locally Generated Mail qmail-queue Cleaning Up Injected Mail Accepting Local Mail from Other Hosts Distinguishing Injected from Relayed Mail
7. Accepting Mail from Other Hosts Accepting Incoming SMTP Mail Accepting and Cleaning Up Local Mail Using the Regular SMTP Daemon Dealing with Roaming Users SMTP Authorization and TLS Security POP-before-SMTP
8. Delivering and Routing Local Mail Mail to Local Login Users Mail Sorting
9. Filtering and Rejecting Spam and Viruses Filtering Criteria Places to Filter Spam Filtering and Virus Filtering Connection-Time Filtering Tools SMTP-Time Filtering Tools Delivery Time Filtering Rules Combination Filtering Schemes

Part II. Advanced Qmail
10. Local Mail Delivery How Qmail Delivers Local Mail Mailbox Deliveries Program Deliveries Subaddresses Special Forwarding Features for Mailing Lists The Users Database Bounce Handling
11. Remote Mail Delivery Telling Local from Remote Mail qmail-remote Locating the Remote Mail Host Remote Mail Failures Serialmail
12. Virtual Domains How Virtual Domains Work Some Common Virtual Domain Setups Some Virtual Domain Details
13. POP and IMAP Servers and POP Toasters Each Program Does One Thing Starting the Pop Server Testing Your POP Server Building POP Toasters Picking Up Mail with IMAP and Web Mail
14. Mailing Lists Sending Mail to Lists Using Ezmlm with qmail Using Other List Managers with Qmail Sending Bulk Mail That's Not All the Same
15. The Users Database If There's No Users Database Making the Users File How Qmail Uses the Users Database Typical Users Setup Adding Entries for Special Purposes
16. Logging, Analysis, and Tuning What Qmail Logs Collecting and Analyzing Qmail Logs with Qmailanalog Analyzing Other Logs Tuning Qmail Tuning to Deal with Spam Looking at the Mail Queue with qmail-qread
17. Many Qmails Make Light Work Tools for Multiple Computers and Qmail Setting Up mini-qmail
18. A Compendium of Tips and Tricks Qmail Won't Compile Why Qmail Is Delivering Mail Very Slowly Stuck Daemons and Deliveries Mail to Valid Users Is Bouncing or Disappearing Mail Routing Local Mail Delivery Tricks Delivering Mail on Intermittent Connections Limiting Users' Mail Access Adding a Tag to Each Outgoing Message Logging All Mail Setting Mail Quotas and Deleting Stale Mail Backing Up and Restoring Your Mail Queue A. A Sample Script B. Online Qmail Resources
Index