Pass Your DMARC Checks
Even if your DKIM cryptographic signature is valid, DMARC will fail if the domains don't align. Enter your Header From domain and your DKIM signing domain to verify alignment.
DKIM Tools
Pass your DMARC checks with absolute certainty. Instantly compare your Header "From" domain against your DKIM signing domain (d=) to verify perfect cryptographic alignment in both Strict (adkim=s) and Relaxed (adkim=r) modes.
Even if your DKIM cryptographic signature is valid, DMARC will fail if the domains don't align. Enter your Header From domain and your DKIM signing domain to verify alignment.
DKIM alignment is the secret to passing DMARC. Cryptography only proves the email wasn't tampered with; alignment proves the sender is actually authorized to use your domain.
From: header to match the domain that digitally signed the email (the d= tag in the DKIM-Signature).adkim=r), the domains just need to share the same Organizational (root) Domain. E.g., mail.example.com aligns with example.com.adkim=s), an exact string match is required. mail.example.com will fail if the DKIM signature is signed by example.com..co.uk or .com.au to ensure accurate relaxed checks.p=reject, you must verify that all your legitimate email streams are fully DKIM or SPF aligned.Your feedback has been submitted successfully. We appreciate your help in improving our tools.