Domain health checker
Domain health is the foundation of deliverability. If DNS and authentication are wrong, no copywriting fixes placement.
Checker output
Health
SPF ✓ DKIM ✓ DMARC ⚠
At a glance
Plain-language summary for buyers, operators, and search engines.
In simple terms
A domain health check combines authentication records (SPF, DKIM, DMARC), MX presence, and common DNS mistakes in one view.
Why it matters
Operators need a single health snapshot after migrations, DNS edits, or sudden metric shifts.
How CloudJet handles it
Check after every DNS change and on a schedule; pair with monitoring for drift detection.
Run the Domain Health Checker
See the actual published DNS records, validation results, and suggested fixes — free, no signup.
Live checker
Queries public DNS — shows the actual published records and any issues found.
Enter a domain to see the published DNS record, validation results, and suggested fixes.
Real DNS lookups
We query public DNS and show the exact TXT/MX records published for your domain.
Records + issues
Each check shows the live record, what passed, what failed, and how to fix it.
Go deeper in CloudJet
Sign up to save history, monitor domains, and automate remediation.
How to use this checker
01
Enter your domain above and click Run check for a live DNS lookup — free, no account required.
02
Sign up for CloudJet to save history, monitor changes, and automate remediation across your sending domains.
What healthy email DNS looks like
Valid SPF with lookup count under the limit.
DKIM selector published and signing active.
DMARC record with appropriate policy and reporting.
MX records resolving for domains that receive mail.
Related pages
Continue exploring capabilities that connect to this topic.
Questions & answers
How to run this check, read results, and pair with CloudJet monitoring.
After any DNS or provider change, and periodically otherwise. Automated monitoring catches drift before it becomes an incident.
Monitor these checks in CloudJet
Free checks run on this page. Sign up for saved history, alerts, and continuous domain monitoring.