SPF, DKIM, MX and the plumbing behind deliverability.
SPF / DKIM / DMARC Checker
Audit all three email auth records, count SPF lookups, find DKIM selectors.
DMARC Report Parser
Paste a DMARC aggregate XML report and read it as a table: who sends as you, pass or fail, aligned or not.
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Reading in this category
How to read a DMARC report: the aggregate XML, decoded
How to read a DMARC aggregate report: what the XML fields mean (source IP, count, disposition, DKIM and SPF alignment) and how to spot real senders versus spoofing.
SPF, DKIM and DMARC explained: the records your email needs
SPF lists who may send for your domain, DKIM signs each message, DMARC sets the policy when checks fail. How the trio works and how to deploy it safely.