Free ToolValidator

DKIM Record Checker

Validates the DKIM TXT record format: v=DKIM1, k= algorithm, p= public key presence.

Paste DKIM TXT record value

✓ v=DKIM1 present

✓ Algorithm: k=rsa

✗ Missing or empty public key (p=)

What it does

Parses v=DKIM1; k=rsa; p=... format. Flags missing version tag, missing public key, wrong key algorithm.

When to use

After setting up DKIM. When DKIM signing is failing.

FAQ

How do I find my DKIM record?+

DNS lookup at selector._domainkey.yourdomain.com. Default selector is often 'default', 'google', 'k1', or similar — check your mail provider's docs.

Keep going

Articles, glossary entries, and other tools on the same topic.

SPF, DKIM, and DMARC

SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authenticati…

Combines selected services (Google Workspace, Microsoft 365, Mailgun, SendGrid, others) into a single SPF v=spf1 record with the appropriate include directives and policy suffix (~all, -all, or ?all).

DMARC Generator

Generates the DNS TXT record for _dmarc.

Validates v=spf1 prefix, counts DNS-lookup-triggering directives (include, a, mx, ptr — limit 10), checks all-policy (~all, -all, ?all), highlights common syntax errors.

DMARC Validator

Validates v=DMARC1 prefix, p= directive (none/quarantine/reject), optional pct (1-100), rua and ruf reporting addresses (valid email format), optional sp subdomain policy, alignment modes (aspf, adkim).

DMARC RUA Parser

Parses RUA XML, groups by source IP, shows volume and SPF/DKIM/DMARC results per source.

You validated the setup. Want the live monitor that watches it forever?

One-time validation catches today's misconfiguration. Outsolvi watches every send forever and flags the day your record stops passing, the day a sender goes rogue, or the day a bounce pattern shifts. From $7/user/mo yearly.

Switch on continuous monitoring

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Nate SummersCo-Founder, Outsolvi

Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi runs Tier 1 to 5 confidence scoring on every open, native in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.

Last reviewed May 25, 2026Editorially independent

We update these pages when the underlying mechanics change — new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.

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