I wish that were the case.

I've been administering mail servers going back over 20 years and I wouldn't recommend it to anyone. The last 4 years or so, things have gotten a lot worse. Google and Microsoft are actively and deliberately making it harder for people to run their own mail servers.

Sure, setting up DKIM and SPF and whatnot isn't hard. But blackholing legitimate mail without any reason, without any form of notification or any possible appeal, well that's just appalling. And sure, Google & MS have tools to debug a subset of mail issues, but those don't even work unless your MTA is sending boatloads of mail to their servers.