---
title: "SPF and DKIM Passed. So Why Did DMARC Fail? | WarmInboxes"
description: "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."
url: https://warminboxes.com/videos/dmarc-alignment-checker
breadcrumb: "Home > Tool demos > DMARC Alignment Checker"
---
# 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 →](https://warminboxes.com/dmarc-alignment-checker) Free, no account.