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MX Record Lookup

Look up MX (Mail Exchange) records for any domain to see which mail servers handle its email. Essential for troubleshooting email delivery and verifying domain configuration.

MX Record Lookup

Find mail servers for any domain

What are MX Records?

  • MX = Mail Exchange records in DNS
  • They specify which servers receive email for a domain
  • Multiple records provide redundancy
  • Priority determines which server to try first

About this tool

MX records tell the world where to deliver mail for your domain. If emails to your domain aren't arriving, your MX records are the first place to check. Once you've verified your MX configuration, ensure your domain is properly authenticated with SPF, DKIM, and DMARC. For sending emails, use our email validator to check recipient domains and our blacklist checker if you have delivery problems.

Frequently Asked Questions

MX (Mail Exchange) records are DNS records that specify which mail servers are responsible for receiving email for a domain. They include a priority value - lower numbers have higher priority.

Multiple MX records provide redundancy. If the primary server (lowest priority number) is unavailable, email is delivered to backup servers with higher priority numbers.

Without MX records, the domain cannot receive email. Some systems fall back to the A record, but this is not reliable. Every domain that needs email must have MX records.

MX records often reveal the email provider. For example, 'aspmx.l.google.com' indicates Google Workspace, 'mail.protection.outlook.com' indicates Microsoft 365.

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