I'll be interested to see what information within this ebook more relevant or upto date than something like "Postfix the definitive guide" from the O'Reilly ser

I'll be interested to see what information within this ebook more relevant or upto date than something like "Postfix the definitive guide" from the O'Reilly series. When I configured my first mail server it was all very cryptic but then I had very little sysadmin experience at the time. I honestly feel postfix is very easy to setup and its the main reason I chose it over other mail servers like exim, qmail or sendmail. I only became aware of the added performance bonus after running bulk mailing at 1 million emails per hour.