I bought this book as it is the only one on the subject, kindly written by the author of Exim itself. Its extremely informative, however it is written in a rather generic way. It is at a higher level than I was looking for as a beginner.
I am sure this book will prove useful once I am more experienced using Exim, but I was not able to work out how to configure using it as a novice, for that I found turorials on the internet.
File names and locations are not clear when reading for reference.
If you are an Exim user and have a bit of spare change its worth the money, but dont expect an easy ride.