Checked the mailserver compilation instructions

Yes, I’ve just finsihed compiling everything on my new Mac mini. I didn’t waste any time and got right to it. When running through my own installation and compilation instructions I found some errors and omisions. But everything is now corrected and you should be able to compile it yourself as well when you follow the instructions.

If you run into an error or read something you don’t understand please let me know so I can correct it, change the writing or add some extra information.