Part 3-- Mail

Part 3 has two chapters:

Chapter 8, "Understanding Mail Services," describes mail service functions, the programs it uses, and how it works.

Chapter 9, "Setting Up and Administering Mail Services," describes several typical mail scenarios and details the tasks for setting up mail for each scenario. It also provides information about how to troubleshoot a mail installation and how to administer mail services.

You can also refer to Appendix C, "Customizing sendmail Configuration Files," explains the structure and syntax of the sendmail configuration file and how to customize it for more complex mail environments.