DMARC Validator
DMARC ties SPF/DKIM authentication to the visible From domain and tells receivers whether to monitor, quarantine, or reject failures. Publish at _dmarc.domain. Start with p=none while collecting rua reports, then tighten. DNS Checkers parses common tags for quick review.
Frequently asked questions
Quick answers about propagation, resolvers, and how this checker works.
Are email auth results a guarantee of inboxing? +
No. They show published DNS policy and banners. Inbox placement also depends on reputation and content.
Does DNS Checkers send email during SMTP tests? +
No. SMTP tests only connect and read a banner, then quit.
Where do SPF/DKIM/DMARC live? +
SPF and DKIM publish in TXT; DMARC lives at _dmarc.domain as TXT.
Is this free? +
Yes. Phase 2 email tools are free with the same AdSense-safe policies as Phase 1.
Can results differ by resolver? +
Yes. After DNS edits, use the propagation checker while caches expire.