25.12 Alphabetized Header Reference

Some header lines need to be declared in the configuration file by using the H command. Others are created internally by sendmail. Still others are created by mail MUAs. These differences are described individually with each header-line name. The following discussion of header names is in alphabetical order.

    Part I: Build and Install
    Part II: Administration
    Part III: The Configuration File
    Chapter 21. The D (Define a Macro) Configuration Command
    Chapter 24. The O (Options) Configuration Command