The fourth part of this book provides a comprehensive reference for all the innerworkings of the configuration file, and for debugging and rule testing.
Presents an overview of the sendmail.cf file. Comments,
joined lines, and the
V configuration command are detailed.
Shows how the workspace is rewritten by individual rules.
$*, are explained here.
Covers the flow of addresses through rule sets, and illustrates
the special uses of rule sets 0 through 5, and the
Shows how to define mail delivery agents with the
configuration command. The
F= flags are also listed.
Shows how to define and use macros. An explanation of all macros currently in use is included.
Shows how multiple values can be stored in class macros.
The special uses of the
are also shown.
Shows how to create, declare, and use external databases and network maps.
Shows how to declare options from the command line and in the configuration file. Then every option is explained.
Describes the legal contents and form of headers in email
messages and in the
H configuration command.
Then many common headers are explained.
Shows the many ways to run sendmail with emphasis on its numerous command-line switches.
Documents the many debugging switches available with sendmail.
Describes sendmail's rule-testing mode and shows the many ways to use that mode to solve problems.