Installing and configuring the Exim 4 mail server
While installing a mail server is trivial, properly configuring it is not easy. I hope to provide enough information here to allow anyone to understand the basics of mail serving using the Exim 4 mail server, distributed with Debian. I found that the existing documentation was either obtuse and unhelpful or simply nonexistent, so I attempt to give a definitive setup guide here. Certainly the actual Exim 4 pages are useless in giving clues to those without a full knowledge of mail server software.