It's not 'hard', it's 'a gigantic pain in the ass' which is (in normal word use) one form of 'hard'. Which is why most sane people stopped doing it themselves say 15 years ago. Especially for the few cents you can get professional 3rd party email hosting for. Edit: I also very much like the disingenuity of articles saying 'X isnt' hard! Just execute these 20 commands!' Duh, executing those commands isn't the problem,…
If you’re already basically competent with the OS you’re using and have a machine with a decent connection that can be used for mail then it actually isn’t hard.