Reviewing a new mail domain
Get a first view of the records before testing actual messages.
MX · SPF · DMARC
Email DNS health checker
Run one free diagnostic for the DNS records that matter most to email receiving and authentication.
Report
| MX priority | Mail exchanger |
|---|
What a healthy email domain needs
MX records tell other systems where to deliver mail. SPF identifies permitted sending infrastructure. DMARC publishes alignment and enforcement policy. These records solve different problems, so this report keeps them separate instead of collapsing them into a vague score.
What is not included
DKIM records require a selector, so use the DKIM record checker when you know the selector from your mail provider or an email's DKIM-Signature header.
Put the result to work
Review receiving routes and sending policies together
This page brings domain resolution, MX, SPF and DMARC lookups into one view. Each record answers a different question. Passing one check cannot substitute for the others.
Enter the mail domain
Use the domain in the email address rather than a website URL.
Read the individual rows
MX concerns incoming routes. SPF and DMARC concern sending authentication policies.
Follow the specific finding
Use the dedicated record checker for the item that needs investigation.
Worked examples
What the evidence tells you
Illustrative scenarios, not live results for the addresses or records shown. Open a scenario to see the next action.
01MX found; SPF absent
Receiving and sending differ
The domain has incoming routes but no matching SPF record was returned.
Next action Review whether it sends mail and how.
02SPF found; null MX
Sending-only setup may be intentional
A domain can publish a sending policy while explicitly declining incoming mail.
Next action Confirm the intended use.
03DNS timeout
Incomplete snapshot
Missing evidence during a temporary error should not be presented as a definite configuration failure.
Next action Retry and compare later.
Use it with a purpose
Where this tool fits
Checking a migration
Compare incoming routes and sending policies after moving providers.
Before you decide
Questions about this tool
Does this inspect my DNS control panel?
No. It queries publicly published DNS records.
Does it include DKIM automatically?
No. DKIM requires a selector; use the dedicated lookup.
Does a complete set guarantee delivery?
No. Actual sending, receiving and recipient policies still affect mail.
