I am now well on my way through all of the comments, updates and corrections that other members of the Exim community have kindly made to my original draft.
I'm now two and a half years into a project I thought would only take six months. At one point I considered giving up...
Beginners Guide - The first half of the book has been proof-read and commented on by several members of the exim community. I am now working on the feedback from the reviewers. Part one of the book covers email concepts and installing and configuring the server. Part two contains several working examples with side-by-side explanations of the code.