Free MX Record Lookup
Use our free MX record lookup and DNS email checker to verify that a domain has valid mail exchange records. Enter any domain to check its MX records, SPF, and TXT configuration.
What Is an MX Record Lookup?
An MX record lookup queries the DNS (Domain Name System) to find the mail exchange records for a domain. MX records tell the internet which mail servers are responsible for receiving email on behalf of that domain. Our free DNS email checker retrieves these records in real time so you can confirm a domain is properly configured to receive email.
This tool is essential for email marketers, developers, and IT administrators. Before sending a campaign, checking MX records helps you identify domains that cannot receive email — saving you from hard bounces that damage your sender reputation. It also surfaces SPF records, which show whether a domain has anti-spoofing protections in place.
Small businesses can use this tool to troubleshoot email delivery issues, while developers can use it to validate domains during user registration. If a domain has no MX records, any email sent to it will bounce immediately.
How to Use This Tool
- Enter a domain name (e.g.,
example.com) in the field above. - Click Check Records.
- Review the DNS summary — green badges mean records were found.
- Check the MX Records table for mail server hostnames and priorities.
- Review SPF and TXT records to assess email authentication setup.
Frequently Asked Questions
What is an MX record?
An MX (Mail Exchange) record is a DNS entry that specifies which mail server handles incoming email for a domain. Without valid MX records, a domain cannot receive email and any messages sent to it will bounce.
Why should I check MX records before sending email?
Sending to domains without MX records causes hard bounces. Too many hard bounces damage your sender reputation and can get your IP blacklisted. Checking MX records first lets you remove undeliverable addresses before sending.
What does an SPF record do?
An SPF (Sender Policy Framework) record is a TXT DNS record that lists authorised mail servers for a domain. It helps receiving servers verify that incoming email is legitimate and not spoofed, reducing spam and phishing.