Inspect

Check a domain, a DKIM key, an SPF chain or a single email header, and see exactly what is wrong.

6 articles

DNS History: see what your records looked like before A timeline of every DMARC and SPF record change DMARCS has seen for a domain, with the full record value at each point, for working out what broke and when. Domain Health: send a real test email Prove your SPF, DKIM and DMARC actually work by sending one email to check@dmarcs.com and reading back what a real receiving server saw. DNS Inspector: check every email record at once Enter a domain and get found or missing for DMARC, SPF, MX, MTA-STS and TLS reporting in one pass, with the raw record shown wherever one exists. DKIM Inspector: track every DKIM key you publish Every DKIM selector on your domain with its key strength and live status, plus a DNS scan that finds selectors you didn't know were published. SPF Surveyor: see your whole SPF chain as a tree Draws your SPF record as a tree, following every include and redirect and labelling Google, Microsoft 365, Salesforce and other vendors. Header Analyzer: find out where an email really came from Paste the raw headers of any email and get a plain-language verdict on who sent it, the path it took, and whether SPF, DKIM, DMARC and ARC passed.