@tubsta I used https://comfy.guide/server/smtpd-email/ for the dmarc part that I was not used to. I found out that it is not hard. All the other parts were setup using the great manual pages:https://man.openbsd.org/wghttps://man.openbsd.org/pf.confhttps://man.openbsd.org/smtpd.confAnd #openbsdams ptr guide:https://openbsd.amsterdam/ptr.htmlI learned, that I can run a frontend on a tiny VM and don't need much storage there. I get all the benefits of a full mail server for just a few euros. And it runs openbsd - perfect
