TLS and Postfix

Upgrading some of our Mail Servers to support for TLS (Transport Layer Security) in Postfix and apart from learning how to do it, also learned a key maxim of programmers (readily applicable to system administrators) DO NOT PRE-OPTIMISE Wasted two days of my life, with increased anxiety during the install, configuration process because I was trying to be too smart too early. After a Duhhh moment, I went back to the very beginning of the install process, and did everything as per the known guides (without that little tweak I had preconceived, and the install worked in less than an 1 hour) »