DNS checker for email
DNS mistakes are the silent killer of deliverability. Wrong records, typos, and stale delegations break authentication without obvious errors in your sequencer.
Checker output
DNS
TXT/MX/CNAME ok
At a glance
Plain-language summary for buyers, operators, and search engines.
In simple terms
An email DNS checker validates the records mailbox providers query before accepting your mail.
Why it matters
A single wrong TXT record or CNAME conflict can fail SPF, DKIM, or DMARC for an entire domain.
How CloudJet handles it
Audit TXT, MX, and CNAME records after migrations, provider changes, or unexplained placement drops.
Run the Dns 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.
Common DNS issues for email
SPF TXT record missing, duplicated, or split across multiple invalid records.
DKIM CNAME pointing to a decommissioned provider.
DMARC record on wrong subdomain or with typos in policy tags.
MX records missing or pointing to deprecated mail hosts.
CNAME at root conflicting with TXT records (provider-specific constraints).
DNS propagation and TTL
01
Changes may take minutes to 48 hours depending on TTL and resolver caching.
02
Lower TTL before planned migrations; verify from multiple DNS resolvers after changes.
Related pages
Continue exploring capabilities that connect to this topic.
Questions & answers
How to run this check, read results, and pair with CloudJet monitoring.
Failed SPF, DKIM, or DMARC reduces authentication alignment. Receivers treat unauthenticated or misaligned mail as higher risk.
No. Only one SPF TXT record is valid per domain. Merge mechanisms into a single v=spf1 record.
Monitor these checks in CloudJet
Free checks run on this page. Sign up for saved history, alerts, and continuous domain monitoring.