Bulk MX Record Checker

What is an MX Record?

A Mail Exchange (MX) record is a specific type of DNS (Domain Name System) record that directs emails to a mail server. It indicates how email messages should be routed in accordance with the Simple Mail Transfer Protocol (SMTP, the standard protocol for all email). Essentially, MX records tell the world which mail servers accept incoming email for your domain and where emails sent to your domain should be delivered. Without valid MX records, you cannot receive email.

Why Check MX Records?

Verifying your MX records is a critical step in ensuring your email infrastructure is healthy. Here is why you should regular use an MX Record Checker:

• Troubleshoot Email Delivery: If you aren't receiving emails, incorrect MX records are often the culprit.
• Verify Configuration: Ensure your new email provider (like Google Workspace, Office 365, or Zoho) is correctly set up.
• Prevent Spoofing: Audit your records to ensure no unauthorized servers are listed.
• Check Priority: Confirm that backup mail servers are configured with the correct priority values.

How to Use This Free MX Checker Tool

Our tool is designed to be the simplest and fastest way to query live DNS data. Here is how it works:

1. Enter Domain: Type the domain name you want to check (e.g., gmail.com or yourbusiness.com) into the input field above.
2. Click Lookup: Hit the "Lookup MX" button to initiate a real-time DNS query.
3. View Results: Instantly see a list of all MX records associated with the domain, including their priority (preference) values and destination servers.

Understanding MX Record Priorities

You might notice a number next to each MX record, such as 1, 5, 10, etc. This is the preference or priority value.

Common MX Record Errors

When diagnosing issues, look out for these common problems:

• Missing Records: The domain has no MX records at all, meaning it cannot receive email.
• Points to CNAME: MX records should point to an A record (IP address) or AAAA record, never a CNAME (alias), as per RFC standards.
• Unreachable Servers: The server listed in the MX record is offline or refusing connections.