thanks for the info. i am planning to use my own domain with an mail provider instead of self-hosting an email server. Reason beeing that in case i want to change my mail provider, i just move my domain to a new service provider instead of having to change my mail adress everywhere.

I think you don’t know what “evidence” means. It’s barely a clue.

What are the chances?

Well, I won’t make up numbers (like you did) but two things

• wrong diagnosis are a thing, won’t argue about that
• you mostly hear the people who complain about false diagnosis. Just because a group of people is “loud” does not mean they are in the majority.

Well, it worked for 10+ years, that’s something, isn’t it?