Rating: 

One MAJOR problem though... Version 8.8.4 is unsecure & mainly OLD and later versions (8.12.2) are COMPLETLY different in terms of building & compiling from source (directories are in TOTALLY different) and in terms of the client.cf created in the tutorial. It IS well done but only for Version 8.8.4 which is WAY outdated!!!

If the author/creator of sendmail can PLEASE put out a pdf file or a new book about the changes from 8.8.4 to those more modern versions (i.e.: 8.12.2) of sendmail, it'll be THE BEST!!!

Please email me if you know of any guides/books/how-to's that explain Version 8.12.2 or similar...

Thanks!!

but it does give you the basics...but i'm sure new functionality was added to later versions.