This chapter describes the following four basic mail configurations and outlines the tasks required to set up each configuration. All of the information in this chapter is new in this edition.
Single DNS domain with an Internet connection and a combined mail hub and gateway.
Single DNS domain with Internet connection and separate gateway.
DNS domain and a subdomain with one Internet connection.
DNS domain with a UUCP gateway.
You may find the following sections useful if you need to set up a new mail system or are expanding an existing one. The configurations start with a basic case (a single DNS domain connected ...