Mail Service Programs and Files

Mail services include many programs and daemons that interact with each other. This section introduces the files, programs, terms, and concepts that are related to administering electronic mail.

• Enhancement for vacation Utility

• Contents of the /usr/bin Directory

• Contents of the /etc/mail Directory

• Contents of the /usr/lib Directory

• Other Files Used for Mail Services

• Interactions of Mail Programs

• sendmail Program

• Mail Alias Files

• .forward Files

• /etc/default/sendmail File