Appendix E. A Map to Tutorial Information
This third edition of the book
has opted to omit a separate tutorial part for three reasons:
The complexity and size of sendmail as a topic
have increased to the point where the nontutorial materials have
exceeded 1200 pages.
As sendmail has evolved, it has tried to isolate
the reader more and more from its internals.
The only tricky part of sendmail is still its
rules and rule sets, and those are covered in two chapters dedicated
In place of a separate tutorial, we decided to offer a guide to
introductory materials in its place. As someone new to
sendmail you might be better served by following
this guide rather than attempting to read huge, unstructured chunks
of this book.