Writing a Custom Macro Configuration File

Why go to the trouble to generate a sendmail configuration file? Because writing or even modifying an existing sendmail configuration file can waste many hours of your time, and you're still likely to make subtle mistakes. The developers of sendmail have, over time and through much trial and error, collected all of the necessary rulesets to implement virtually any sendmail behavior and “canned” them for use in the sendmail m4 macro definition files. These macro definitions also include methods for modifying all sendmail configuration options. This arrangement is desirable for the following reasons.

  • It enables ...

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