New subscriber here.
I wanted to request an email header enhancement. For incoming email, currently the "Authentication-Results" header only displays if SPF passed or failed. Other email implementations also place the DKIM and DMARC results there. I'm requesting the Cloudron email also place the DKIM and DMARC results in the Authentication-Results header.
Authentication-Results: mail2.outsi.de (dis=neutral; info=dmarc domain policy); dmarc=pass (dis=neutral p=reject; aspf=r; adkim=r; pSrc=dns) header.from=example.org; dkim=pass header.d=example.org header.s=r header.b=O/8zOi6w
I believe this available by adding OpenDMARC to Postfix.
When fully functional this header is a useful troubleshooting tool for incoming emails.