Domain alignment is the rule DMARC uses to confirm identity. Learn common alignment mistakes and fixes.
Domain alignment is the concept of matching the visible From domain with the authenticated domain used by SPF or DKIM. DMARC depends on this match to decide pass/fail.
A common mistake is using a third-party service whose Return-Path or DKIM domain doesn’t align with your From domain. Fixes usually involve custom DKIM, aligned envelope-from, or sending from a proper subdomain.