That's the price you're paying for a) self hosting and b) relying on decentralized protocols that don't have sensible abuse protections. People hosting their o

That's the price you're paying for a) self hosting and b) relying on decentralized protocols that don't have sensible abuse protections. People hosting their own servers enabled wide spread abuse due to misconfigurations. Because everyone could do it and because defaults were shit for decades, stuff like open relays were common. People defaulted to the wrong ports. Almost no one bothered to offer STARTTLS/Transport Encryption. Spam would have killed mail by now if it hadn't been for major players like Google, GMX, Hotmail/Outlook/etc. Back in the day, greylisting was commonly regarded as a best practice, leading to the impression that email is unreliable and prone to latencies. I'm sorry it's this difficult to host mail by yourself nowadays, but I'm happy to have a spam-free inbox every day and if this is the price for that, I'm sure about 1-2 billion people are willing to pay it. I'm quite astounded that there have been no updates to mail protocols in the last couple of years to at least mitigate the most common issues, but all I see are band-aids that are complex to setup and horrible to debug in case of issues.