Why these three records matter
SPF, DKIM and DMARC are the three DNS-based standards that let receiving mail servers confirm a message genuinely came from the domain it claims to be from. Together they are the main defense against spoofing and phishing, and major inboxes such as Gmail and Yahoo now require all three to be correctly configured for bulk senders.
What each record does
- SPF – lists which mail servers are allowed to send on behalf of the domain.
- DKIM – attaches a cryptographic signature to outgoing mail so receivers can confirm it was not altered in transit.
- DMARC – tells receiving servers what to do when a message fails SPF or DKIM (monitor, quarantine, or reject), and where to send reports.
What this tool returns
Rather than a simple pass/fail, this checker pulls and displays the actual raw TXT records for the domain entered, plus the DMARC policy in plain language. A known DKIM selector can also be checked directly, since DKIM records are published under a selector-specific subdomain and cannot otherwise be found by guessing.
If any of the three records is missing, that is the first thing to fix – deliverability problems and messages landing in spam very often trace back to an incomplete SPF/DKIM/DMARC setup.
