These strengths of sendmail are also its weaknesses. Configurability has bred complexity.
The sendmail program is difficult to configure and even more difficult to
understand. Its configuration file, for example, can be positively frightening. But
don??™t despair. With this book in hand, you should be able to configure sendmail to
meet any need and bring the days of the sendmail guru to an end.
History
The sendmail program was originally written by Eric Allman while he was a student
and staff member at the University of California at Berkeley. At the time, one campus
machine (Ingres) was connected to the ARPAnet and was home to the INGRES
project where Eric was working. Another machine (Ernie CoVax) was home to the
Berkeley Unix project and had recently started using the Unix to Unix Communication
Protocol (UUCP). These machines (as well as several others on campus) were
connected via a low-cost network built by Eric Schmidt, called BerkNet. Software
existed to move mail within ARPAnet, within UUCP, and within BerkNet, but none
yet existed to move mail between these three networks.
A sudden increase in protocol types, coupled withth e anticipation of an explosion in
the number of networks, motivated Eric Allman to write delivermail??”the precursor
to sendmail. Th edelivermail program was shipped in 1979 with 4.0 and 4.1 BSD
Unix.
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