SPF and DKIM Passed. So Why Did DMARC Fail?
Tool demo · DMARC Alignment Checker
A short walkthrough of the free WarmInboxes DMARC alignment checker: see why a message can pass SPF and DKIM and still fail DMARC when the domains do not align.
DMARC Alignment Checker
Paste a real message’s headers and find out why DMARC failed when SPF or DKIM passed.
Run the DMARC Alignment Checker → Free, no account.