A DMARC record is made up of tags (sometimes called DMARC parameters or DMARC flags) that tell receiving mail servers how to handle email from your domain. There are eleven tags defined in the DMARC standard. Fortunately, you only need three of them to have a fully functional, properly configured DMARC record. The original DMARC standard defined eleven tags. With the 2026 update to the spec (RFC 9...