What is SPF and why is it important?

SPF (Sender Policy Framework) is a DNS TXT record that specifies which mail servers are allowed to send email on behalf of your domain. It helps prevent email spoofing and improves deliverability by telling receiving servers which IPs are legitimate.

What is DMARC and how does it work?

DMARC (Domain-based Message Authentication, Reporting & Conformance) tells receiving mail servers what to do when emails fail SPF or DKIM checks. It can instruct servers to reject, quarantine, or allow failed messages, and provides reporting on email authentication.

Why are my emails going to spam?

Common causes include missing or misconfigured SPF, DKIM, or DMARC records, being on email blacklists, poor sender reputation, or content triggering spam filters. Use this tool to check your email authentication setup.

Mail Check - MX, SPF, DMARC Analysis

📩 MX Records

🔒 SPF Record

🛡 DMARC Record

🔑 DKIM Records

📊 Security Analysis

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Why Email Authentication Matters

Email authentication protects your domain from being used for spam and phishing. Properly configured SPF, DKIM, and DMARC records significantly improve email deliverability and protect your brand reputation.

Email Record Types

MX Records – Specify which mail servers receive email for your domain
SPF (Sender Policy Framework) – Defines which IP addresses can send email on behalf of your domain
DKIM (DomainKeys Identified Mail) – Adds a digital signature to verify email authenticity
DMARC – Tells receiving servers what to do with emails that fail SPF/DKIM checks

Related Tools

Use DNS Check to view all DNS records. Find subdomains with Subdomain Finder.

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Why Email Authentication Matters

Email Record Types

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