11/12/2025
Part 2 of our mail server guide is up.
This one's about DNS records - the stuff that actually determines whether your emails reach the inbox or get dumped into spam.
We go through MX, SPF, DKIM, DMARC, and PTR: how to check what you have, what it should look like, and how to fix it if something's off. Also covered hostname configuration and how to verify everything at the end.
It's written for people who prefer running commands over reading documentation for hours.
👉 https://blog.kodu.cloud/reliable-email-delivery-part-2