SPF, DKIM and DMARC Without the Jargon

SPF lists the servers allowed to send for your domain. DKIM adds a cryptographic signature that helps prove a message was not changed. DMARC tells receiving systems what to do when authentication fails and where to send reports.

Set up SPF and DKIM first, then begin DMARC in monitoring mode. Review reports, confirm every legitimate sender, and strengthen the policy gradually. Authentication supports deliverability, but list quality and recipient response still matter.