It discusses the Postfix interfaces to various tools that round out a fully scalable and highly secure email system. These tools include POP, IMAP, LDAP, MySQL, Simple Authentication and Security Layer (SASL), and Transport Layer Security (TLS, an upgrade of SSL). A reference section for Postfix configuration parameters and an installation guide are included. Topics include:
* Basic installation and configuration
* DNS configuration for email
* Working with POP/IMAP servers
* Hosting multiple domains (virtual hosting)
* Mailing lists
* Handling unsolicited email (spam blocking)
* Security through SASL and TLS