What is Sendmail ?


Sendmail was the first well-known SMTP server.

The server has the following components:

Command line interface as reference

The command line client sendmail has become a de facto interface because it's used by client to send email as an interface (mailx, …)

Almost all MTAs provide a sendmail interface making it the default implementation.

For instance, postfix postfix is a Sendmail-compatible MTA and therefore provides a sendmail command in its installation.

Management of the daemon


/sbin/service sendmail restart



sudo apt-get install sendmail

Submitting mail

See How to send an email with the SendMail command line client ?

Documentation / Reference

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