[NorwegianDude]

Running a mail server is very easy. Setting it up to begin with is the hardest part. Email isn't exactly moving fast, so it's basically set and forget if you don't have to deal with it on behalf of untrusted parties.

That said, a technically inclined person would probably be able to set up a server in a day or three and understand the basics of how it all ties together.

Just because not that many people understand how to set it up doesn't make it hard. But it's definetly showing it's age and could be much simpler to use.

[aj3]

It’s definitely not set and forget. In the past year alone there where multiple 0day attacks against Exim and MS Exchange servers.