Email Authentication Monitoring

Protect your domain's email reputation with automated DKIM, SPF & DMARC checks.

Secure your emails

Key Benefits

Monitor the DNS records that protect your domain from spoofing and phishing attacks.

Verify your DKIM selector records are properly configured and cryptographically valid.

Monitor your SPF record for proper syntax, DNS lookup limits, and authorized senders.

Ensure your DMARC policy is correctly published and receiving aggregate reports.

How it works

We continuously validate your email security DNS records and alert you when something changes or breaks.

SPF Record: Syntax validation, DNS lookup count (max 10), and authorized IP/includes
DKIM Selectors: Public key presence, key length, and record format
DMARC Policy: Record existence, policy mode (none/quarantine/reject), and reporting config
MX Records: Mail server availability and priority configuration

Email authentication checks run automatically every 6 hours for all plans, including the Free tier.

Misconfigured email authentication records can cause your legitimate emails to land in spam—or worse, allow attackers to spoof your domain.

Deliverability: Gmail, Microsoft 365, and other providers require proper SPF/DKIM/DMARC for inbox placement.
Brand Protection: DMARC prevents phishing attacks that impersonate your domain.
Compliance: Many industries require email authentication for regulatory compliance.
Visibility: Know immediately when a DNS change breaks your email flow.

Free Tool

Use our free Email Auth Checker to instantly analyze your domain's SPF, DKIM, and DMARC configuration—no sign-up required.

Start monitoring your email authentication for free.