Email Diagnostics
Comprehensive email and DNS health check
This page provides original, human-reviewed information about combined email and DNS diagnostics, explaining how running MX, SPF, DKIM, and DMARC checks together reveals configuration gaps a single check would miss.
Our comprehensive email diagnostics tool performs multiple tests to assess your domain's email deliverability, security configuration, and DNS health. This helps identify potential issues before they impact your email communication.
What We Test:
MX Records
Check mail exchange records configuration
SPF Record
Validate Sender Policy Framework configuration
DKIM Record
Check DomainKeys Identified Mail setup
DMARC Record
Analyze DMARC policy and configuration
Blacklist Status
Check if domain/IP is listed on major blacklists
DNS Propagation
Verify DNS records are properly propagated
Mail Server Connectivity
Test connection to mail servers
SSL Certificate
Check SSL/TLS certificate validity
Reverse DNS
Verify reverse DNS (PTR) records
Email Deliverability
Overall email deliverability assessment
Each diagnostic test is scored from 0-100 based on the configuration quality andpotential impact on email deliverability.
Optimal configuration with no issues
Minor issues that should be addressed
Critical issues requiring immediate action
Overall Score Calculation:
The overall score is calculated as the average of all individual test scores,giving you a quick overview of your domain's email health.
Failed Tests
- Check DNS record configuration and syntax
- Verify domain ownership and access permissions
- Ensure records have had time to propagate (up to 48 hours)
Warning Results
- Review configuration for optimization opportunities
- Consider implementing stricter security policies
- Monitor for potential deliverability impacts
Timeout Issues
- Check if your DNS servers are responding
- Verify network connectivity and firewall settings
- Try running the test again after a few minutes
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Need Help?
Our tools are designed to be intuitive, but if you need assistance, we're here to help.
About Our Tools
Professional-grade email and DNS diagnostic tools trusted by IT professionals worldwide.