Guides ·
How to use MX Record Checker
MX Record Checker. Mail servers, priorities and their IPs. Senders try the lowest number first and fall back to higher numbers if it fails.
The short answer
To check MX records, enter a domain: ClickZM lists its mail servers in priority order (lowest number first), resolves each to its IP addresses and identifies providers such as Google Workspace or Microsoft 365.
Your browser asks public DNS-over-HTTPS resolvers directly. The answer is what those resolvers see, not your computer's cache.
How to use it
Enter the website address, domain or IP you want to check.
Click the button to run the MX Record Checker.
Read the results; warnings and errors are highlighted with an explanation.
Fix any issue, then run the check again to confirm.
Limits worth knowing
What does MX priority mean? Senders try the lowest number first and fall back to higher numbers if it fails.
What if a domain has no MX record? Mail falls back to the domain's A record (RFC 5321), though most domains that send mail set MX explicitly.