qmail.org:A replacement for sendmail: some 100 mirrors, much content in several languages, news, links: commercial support, user documentation and software, tips, and advice.
Anti-Spam Howto: Discusses anti-spam philosophies from a variety of perspectives and provides information about available options for dealing with spam within qmail.
Bayespam: A qmail spam filter which uses statistical word analysis on incoming email.
Checkbounce: Free spam filter that bounces spam to its sender. Customizable filters.
Content Filtering with Qmail: Two scripts that allow content filtering on incoming email.
Creating POP Accounts: Setting up pop email accounts in qmail's Maildir format.
Ezmlm: An easy-to-use and high-speed mailing list manager. Includes installation instructions, manuals, FAQ, version tracking, and source downloads.
Helios qmail distribution: Advanced qmail distribution based on qmail-sql which has SMTP/ SMTPS/ POP3/ POP3S/ IMAP/ IMAPS services, antivirus and antispam filters, antispoof, SMTP-AUTH, SMTP-after-POP/IMAP, PHP5 API and many other useful tools.
Life With Qmail: Setting up and running the system. Tips, hints, recipes, and caveats.
lnter7: Provide commercial support of qmail and related mail services. Inter7 has supplied the needs of federal, state, global, and international operations along with small organizations.
Newbie's Guide to Qmail: A step-by-step guide to installing Qmail. Includes a complete shell script suite for configuring, compiling and installing Qmail and related Qmail utilities.
Paul Gregg: Projects: Various scripts and an article on the userless mail hub configuration.
Qmail and selective relaying: Selective relaying with tcpserver and qmail-smtpd
Qmail Howto: Written to help people get started, simplifying installation and making it easier for new users.
Qmail Knowledge Base: A growing collection of links, questions and answers in a categorized, searchable format.
Qmail List Archives: Browse or search mailing list archives.
Qmail Man Pages: The entire set of manual pages.
qmail setup guide: a simple, 2 years old qmail guide written to simplify the qmail install for some users.
Qmail Single UID Howto: Explains how to configure qmail to handle many mail users (multiple email addresses) with separate POP3 accounts without using system accounts.
Qmail: A Replacement for Sendmail: Dan J. Bernstein' qmail pages: information, software, coding philosophy, mail list information, surveys, win $500 if a security hole is found, and future plans.
QmailAdmin: A free software package that provides a web interface for managing a qmail system with virtual domains. Includes documentation and downloads.
Qmailnews.com: New and exciting news about e-mail solutions with qmail.
SPAMbaffle: A SPAM filter for Qmail which can be installed by individual users or the system administrator.
The Qmail Newbie's Guide to Relaying: An FAQ explaining relaying as it pertains to qmail, how to do it selectively, and some of the pitfalls involved.
Virtual Qmail: BSD licensed package allowing you to easily administrate virtual domains under qmail. Includes CGI programs to use on you WWW pages.
Vpopmail: A free GPL software package to manage virtual email domains and non /etc/passwd email accounts on Qmail or Postfix mail servers.