[wott]

> When I was younger, I was told by a veteran sysadmin that only 5 persons in the world knew how to configure Sendmail directly, everyone else was relying on preprocessing scripts written by the aforementioned wizards).

Ha! When I jumped into Linux during the summer of 95, I spent many many days and nights writing directly sendmail.cf rules, because I could not understand and use any of those damn M4 scripts... Handwriting sendmail.cf parts was more straightforward for me (for some value of 'straightforward').

20 years later, I have yet to get around to grasping M4.