Qmail

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.

• 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