Free DNS Record Checker
Check the DNS records that affect email delivery: SPF, DMARC, DKIM, MX, MTA-STS, TLS-RPT, and BIMI in one public report.
Frequently Asked Questions
Which DNS records should email domains have?
Most sending domains need SPF, DKIM, DMARC, and MX records. Security-focused domains can also publish MTA-STS, TLS-RPT, and BIMI records to improve transport security and brand trust.
Why do DNS email records matter?
Mailbox providers use DNS authentication records to decide whether email is legitimate. Missing or weak records can cause spoofing risk, spam placement, and deliverability problems.
Can DNS changes break email?
Yes. A malformed SPF, DMARC, DKIM, or MX record can block legitimate mail or stop inbound delivery. Always validate the exact record before publishing it.
More Email Security Tools
SPF CheckerCheck your domain's SPF record instantly. Validate SPF syntax, see authorized senders, and find misconfigurations that allow email spoofing.DMARC CheckerAnalyze your domain's DMARC record. Check policy mode (none/quarantine/reject), alignment settings, reporting addresses, and get recommendations to strengthen email security.MX CheckerLook up your domain's MX records and verify mail server configuration. Check STARTTLS support, TLS version, and certificate validity for each inbound mail server.