How to prevent email spoofing, using an unholy combination of silly standards
I disagree with the idea that SPF, DKIM and DMARC are somehow hard. They're all one-liners in DNS config that can easily be generated with some online tools if you don't want to read the standard. In my experience, correctly configuring mail server software is a lot harder than configuring the DNS to make your email arrive as reliably as possible. Obscure configuration formats are par for the course for almost every mail server setup.I've personally had a much harder time getting DNSSEC to work than I ever had issues with the various email DNS records. Even that is manageable if you're willing to Google around for a while.My solution to getting self-hosted email right is using Mailcow. A cheap VPS (Contabo FTW) plus Docker is all you need to get it to work, and it spits out all the DNS records you might need to add. That also includes autoconfig records for tons of software, which is nice.