Computer History Notes - Herong's Tutorial Notes - v3.13, by Herong Yang
Using Sendmail as a Mail User Agent (MUA)
This section provides an example using Sendmail a Mail User Agent (MUA) to transfer a local email message.
Sendmail is designed as a Mail Transfer Agent (MTA), not a Mail User Agent (MUA). There are other better MUA programs available on UNIX systems, like mail, elm, and pine.
But Sendmail can be used as MUA to collect an email message directly from the user interface and transfer it to the machine identified in the recipient email address. Here is an example session of using Sendmail as a MUA to transfer a local email on a Linux system:
$su root #which sendmail /usr/sbin/sendmail #ls -l /var/spool/mail/herong -rw-rw---- 1 herong mail 442638 Jul 20 12:08 herong #rm /var/log/mail.log #rm /var/spool/mail/herong #sendmail -X /var/log/mail.log -v herong From: root To: herong Subject: First Test Hi. This is a test. . herong... Connecting to local... herong... Sent #more /var/log/mail.log <<< From: root <<< To: herong <<< Subject: First Test <<< <<< Hi. This is a test. <<< . >>> herong... Connecting to local... === EXEC procmail -a -d herong >>> From root@darkstar.home.com Thu 23 Jul 12:25:29 1998 >>> Return-Path: <root> >>> Received: (from root@localhost) >>> by darkstar.home.com (8.9.0/8.9.0) id MAA00402 >>> for herong; Thu, 23 Jul 1998 12:25:29 >>> Date: Thu, 23 Jul 1998 12:25:29 >>> Message-Id: <199807231625.MAA00402@darkstar.home.com >>> From: root@darkstar.home.com >>> To: herong@darkstar.home.com >>> Subject: First Test >>> >>> Hi. Test is test 1. >>> herong... Sent #more /var/spool/mail/herong From root@darkstar.home.com Thu 23 Jul 12:25:29 1998 Return-Path: <root> Received: (from root@localhost) by darkstar.home.com (8.9.0/8.9.0) id MAA00402 for herong; Thu, 23 Jul 1998 12:25:29 Date: Thu, 23 Jul 1998 12:25:29 Message-Id: <199807231625.MAA00402@darkstar.home.com> From: root@darkstar.home.com To: herong@darkstar.home.com Subject: First Test Status: O Hi. Test is test 1.
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Table of Contents
2002 - .NET Framework Developed by Microsoft
1995 - PHP: Hypertext Preprocessor Created by Rasmus Lerdorf
1995 - Java Language Developed by Sun Microsystems
1991 - WWW (World Wide Web) Developed by Tim Berners-Lee
1991 - Gopher Protocol Created by a University of Minnesota Team
1984 - X Window System Developed a MIT Team
1984 - Macintosh Developed by Apple Inc.
►1983 - "Sendmail" Mail Transfer Agent Developed by Eric Allman
►Using Sendmail as a Mail User Agent (MUA)
Pushing an Email Message in Mail Queue
Using Sendmail as a STMP Server Daemon
1979 - The Tcsh (TENEX C Shell) Developed by Ken Greer
1978 - Bash (Bourne-Again Shell) Developed by Brian Fox
1978 - The C Shell Developed by Bill Joy
1977 - The Bourne Shell Developed by Stephen Bourne
1977 - Apple II Designed by Steve Jobs and Steve Wozniak
1976 - vi Text Editor Developed by Bill Joy
1974 - Internet by Vinton Cerf
1972 - C Language Developed by Dennis Ritchie
1971 - FTP Protocol Created by Abhay Bhushan
1970 - UNIX Operating System Developed by AT&T Bell Labs