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provide direct support for UUCP and handles only domain addresses. Today that isn't as big a limitation as it once might have been; most sites stay within Exim 's limitations. However, for most sites, the work required in setting up either of them is roughly the same.

In this chapter, we deal with what email is and what issues administrators have to deal with. Chapter 18 and Chapter 19 provide instructions on setting up sendmail and Exim and for the first time. The included information should help smaller sites become operational, but there are several more options and you can spend many happy hours in front of your computer configuring the fanciest features.

Toward the end of this chapter we briefly cover setting up elm , a very common mail user agent on many Unix-like systems, including Linux.

For more information about issues specific to electronic mail on Linux, please refer to the Electronic Mail HOWTO by Guylhem Aznar,[2] which is posted to comp.os.linux.answers regularly. The source distributions of elm , Exim , and sendmail also contain extensive documentation that should answer most questions on setting them up, and we provide references to this documentation in their respective chapters. If you need general information on email, a number of RFCs deal with this topic. They are listed in the bibliography at the end of the book.

Notes


[1]

Read RFC-1437 if you don't believe this statement!


[2]

Guylhem can be reached at guylhem@danmark.linux.eu.org .


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