Free users get 3 domain health check checks per day. Resets at midnight UTC.
Is Your Domain Properly Authenticated?
Email authentication protects your brand from phishing attacks and ensures your emails reach the inbox. Our free DNS checker validates your SPF, DKIM, and DMARC records in seconds.
What Our DNS Checker Validates
SPF Record Check
Sender Policy Framework (SPF) specifies which mail servers are authorized to send email on behalf of your domain. Without SPF, spammers can easily forge your email address.
DKIM Record Validation
DomainKeys Identified Mail (DKIM) adds a digital signature to your emails, proving they haven't been tampered with in transit. Our DKIM check verifies your public key is properly published.
DMARC Policy Analysis
Domain-based Message Authentication (DMARC) tells receiving servers what to do with emails that fail SPF or DKIM checks. A proper DMARC check ensures your policy protects against phishing.
MX Record Verification
Mail Exchange (MX) records direct incoming email to your mail servers. Our web domain checker validates your MX configuration for proper email routing.
Why Email Authentication Matters for Your Business
Without proper DNS records for email authentication, your domain is vulnerable to:
- Email spoofing — Attackers can send phishing emails that appear to come from your domain
- Poor deliverability — Your legitimate emails may land in spam folders
- Brand damage — Customers lose trust when they receive fraudulent emails using your name
Use our free DNS checker to scan your domain and identify any missing or misconfigured records. Then use our DNS Generator to create the correct records in seconds.