Qmail

By John R. Levine.
March 2004, 248 pages, US$35.95. C$50.95, £24.95, ISBN 1-56592-628-5.

Qmail has quietly become one of the most widely used applications on the Internet today. It's powerful enough to handle mail for systems with millions of users, like Yahoo! Mail, while remaining compact and manageable enough for the smallest Unix- and Linux-based PC systems. Its component design makes it easy to extend and customize while keeping its key functions secure. The book 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 crucial gaps in existing documentation, detailing exactly what the core qmail software does.

Updates

• None yet.

Corrections

• Page 36: The chown commands should be chmod.
• Page 96: The last line in the example in the middle of the page should read
  10.40.5.6:allow,RBLSMTPD="-All mail blocked due to pornographic spam"