In addition to folding the new V8.14 information into this book, we have fixed all the errata in the third edition to make this fourth edition much more accurate.
This edition of the sendmail book assumes you are using V8.14, the current version of the sendmail program. It follows the same general format as earlier editions, but we realize this might not be the most convenient arrangement for readers who are primarily interested in what has changed since the last edition. To help minimize this problem, we have added Appendix B, in which the many improvements of the intervening versions of sendmail are categorized by chapter, complete with references to the appropriate sections within this book.