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Life & fun · September 1, 2026

DomSec HQ

Instant domain security scanner: SPF, DKIM, DMARC & more

Visit domsechq.com ↗Alternatives

What it does

DomSec HQ checks your domain's email authentication and web security in seconds - SPF, DKIM, DMARC, BIMI, MX, blacklist status, MTA-STS, TLSRPT, DNSSEC, SSL/TLS, and security headers. 5 checks are free with no signup; create a free account to unlock all 11 plus a downloadable PDF report. Built because most small businesses don't find out they're missing SPF/ DKIM/DMARC until Google or Yahoo start silently dropping their mail into spam

Check your domain

A free instant scan of your core email authentication (MX, SPF, DKIM, DMARC, BIMI) — create a free account to unlock all 11 checks, a PDF report, and ongoing monitoring. 5 checks free, no signup needed. Create a free account to unlock the rest. Confirms your domain can actually receive mail, with failover. Stops attackers sending phishing mail that looks like it's from you. Cryptographically proves your outgoing mail wasn't tampered with. Tells mail servers what to do with spoofed mail, and reports abuse back to you. Shows your verified logo next to your email in supporting inboxes. Checks if your mail servers are already flagged as spam sources. Checks browser-enforced protections against…from domsechq.com

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