Are you really trying to fix DMARC from your phone?
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These test messages show common authentication scenarios: a clean send, a broken DKIM signature, a misconfigured SPF record, a complete failure, and a marketing platform sending on behalf of a brand. Click Details on any row for the full breakdown. Use your own address →

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@mailtender.io
DateFromSubjectSPFDKIMDMARCDetails
Mar 31 4:40 PMinfo@acme-demo.comEverything passes — the happy pathpasspasspassDetails →
Mar 30 4:40 PMinfo@acme-demo.comDKIM signature broken — SPF alignment saves DMARCpassfailpassDetails →
Mar 29 4:40 PMinfo@acme-demo.comSPF misconfigured — DKIM alignment saves DMARCfailpasspassDetails →
Mar 28 4:40 PMinfo@acme-demo.comComplete authentication failure — SPF, DKIM, and DMARC all failfailfailfailDetails →
Mar 27 4:40 PMnewsletter@acme-demo.comSent via Pardont — envelope and header-from are different addressespassnot alignedpasspassDetails →