# SPF, DKIM and DMARC

https://demo.wisecp.com/ar/qaidat-al-marifa/maqala/spf-dkim-dmarc

These three DNS records tell receiving servers that your mail is legitimate.

SPF lists the servers allowed to send for your domain, DKIM adds a cryptographic signature, and DMARC tells receivers what to do when a check fails. Large providers increasingly require all three.