Sendmail Desktop Reference

This quick-reference guide to the sendmail program provides a complete overview of sendmail, from command-line switches to configuration commands, from options declarations to macro definitions, and from m4 features to debugging switches — all packed into a convenient, carry-around booklet.

sendmail is the program that acts like a traffic cop in routing and delivering mail on UNIX-based networks — it is a Mail Transport Agent (MTA), accepting mail from Mail User Agents (MUAs), mail users (humans), and other MTAs. Then, it delivers that mail to Mail Delivery Agents (MDAs) on the local machine, or transports that mail to another MTA on another machine. Although sendmail is used on almost every UNIX system, it's one of the last great uncharted territories — and most difficult utilities to learn — in UNIX system administration.

Designed as a companion volume to sendmail, 2nd Edition, this guide covers the latest version (V8.8) from the University of California, Berkeley, and has extensive cross-references to sections in the main volume. Both books are coauthored by Eric Allman, the creator of sendmail.

This quick-reference guide to the send mail program provides a complete overview of the latest version (V8.8) of send mail, from command line switches to configuration commands, from options declarations to macro definitions, and from m4 features to debugging switches--all packed into a convenient portable booklet.

This quick-reference guide to the sendmail program provides a complete overview of the latest version (V8.8) of sendmail, from command line switches to configuration commands, from options declarations to macrodefinitions, and from m4 features to debugging switches—all packed into a convenient portable booklet.

Bryan Costales has been involved with sendmail for more than fifteen years. He is the coauthor of "sendmail, Second Edition" (O'Reilly, 1997) and books on C programming and UNIX communications.

Marcia Flynt has twenty-five years of experience in software engineering, including managing e-mail development for opt-in custom e-mail businesses.
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Allman is a long time contributor to Berkeley UNIX. He is also treasurer of USENIX Association. Besides UNIX and Sendmail, he has worked on database management, window systems, neural-net-based speech recognition, system administration, and networking.