This makes me sad the "old" internet has been dead for a while it seems. I also run my own email "server" but mostly only use it as an inbox so I don't know how things have evolved over time. At some point I signed up for some google feature that will send me a reliability report, zipped, xml from google. I don't remember the details and, yeah, I haven't ever tried to reach out to google but based on their products I imagine it is impossible to actually contact anyone.