Chapter 12: Understanding Advanced Topics

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This chapter deals with advanced topics. These are subjects that some administrators will never have to deal with but that are critical for others.

Overview

This chapter covers the following advanced topics:

• First, we'll cover multiple-recipient delivery versus single-recipient delivery and why qmail always does single-recipient delivery.

• Next, we'll talk about Variable Envelope Return Paths (VERPs) and how they're used for reliable bounce detection.

• Then, we'll show how to configure qmail for large, scalable servers.

• Next, we'll cover the Lightweight Directory Access Protocol (LDAP) and how it can be used with qmail.

• Then, we'll talk about Structured Query Language (SQL) and how it can be used with qmail.

• Finally, we'll cover how to integrate virus scanners into qmail.

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