sendmail, 4th Edition

Overall Syntax

The sendmail.cf file is line-oriented, with one configuration command per line. Each configuration command consists of a single letter^[233] that must begin a line. Each letter is followed by other information as required by the purpose of the particular command.

In addition to commands, the configuration file can also have lines that begin with a # to form a comment line, or with a tab or space character to form a continuation line. A list of all legal characters that can begin a line in the configuration file is shown in Table 16-1.

Table 16-1. sendmail.cf configuration commands

Command	§	Version	Description
#	Comments on page 579	All	A comment line, ignored.
space	Continuation Lines on page 580	All	Continue the previous line.
tab	Continuation Lines on page 580	All	Continue the previous line.
C	Class Configuration Commands on page 854	All	Define a class macro.
D	Configuration-File Definitions on page 787	All	Define a sendmail macro.
E	The E Configuration Command on page 156	V8.7 and above	Environment for agents.
F	Class Configuration Commands on page 854	All	Define a class macro from a file or a pipe.
H	Overview on page 1120	All	Define a header.
K	The K Configuration Command on page 882	V8.1 and above	Create a keyed map entry.
L		Obsolete	Extended load average.
M	The M Configuration Command on page 711	All	Define a mail delivery agent.
O	Configuration File Options on page 952	All	Define an option.
P	Precedence on ...