Yes. main.cf is just as complex as registry hacking. But nobody configuring postfix for realz is frothing over how GUIs are better tools. That's the joke. I feel like you're missing the point of all of this, and it's getting boring. Perhaps I need to seek a smarter audience to make fun of, because explaining this thrice is killing my boner. Or maybe I just need to wait 25 years. Twitter is ablaze today of people installing Windows 95 to celebrate it's anniversary, and everyone's complaining how stupid it is to need to reinstall an entire OS to fix things, and/or TCP/IP stack to make basic changes. When I said the same thing 25 years ago, I was the bad guy for insulting the "user friendly" OS. So maybe folks just need a quarter century to cool off, and objectively understand how shitty their preferred software really is.