MX Lookup
Look up a domain's MX records instantly.
With the MX lookup tool you can instantly view the MX (Mail Exchange) records of any domain. MX records are the DNS records that decide which mail server receives the email sent to your domain. Use the tool to check your email configuration, spot problems and confirm that mail is routed to the right server.
If your MX records are correct but your messages still land in spam, check sender authentication too: look up your domain's SPF, DKIM and DMARC records with our free tools. The NS lookup shows which DNS servers your domain uses, and if you need business email, have a look at our Business Email and Exchange Mail plans.
About MX Records
Learn about MX records, the building block of email routing.
What Is an MX Record?
The DNS record that routes email to a mail server
Priority Value
Decides which server is tried first
TTL Value
Sets how long the record stays in DNS caches
Frequently asked questions
Common questions about MX records and lookups.
What is an MX record?
MX (Mail Exchange) is the DNS record type that decides which mail server receives the email sent to your domain. Every domain that receives email should have at least one MX record.
What does the MX priority value mean?
The MX priority (preference) value decides which server is tried first when there are several MX records. A lower value means a higher priority: a server with the value 10 is tried before one with the value 20.
What is the TTL value?
TTL (Time to Live) is the time, in seconds, for which a DNS record is kept in caches. It reduces the number of DNS queries that reach your name servers and improves performance.
Can a domain have more than one MX record?
Yes. Defining more than one MX record gives you a redundant email setup: when the primary server does not respond, mail is delivered to the secondary server.
What happens if my MX record is wrong?
A wrong or missing MX record can stop email from reaching you or cause messages to be lost. Use this tool to check your MX records and make sure they are configured correctly.
How can I change my MX record?
You can change your MX record in your domain's DNS management panel. If you are a SunucuPARK customer, you can update it from your control panel or by opening a support ticket.
Can an MX record point to an IP address?
No. The value of an MX record must be a host name (for example mail.example.com), not an IP address, and that host name needs its own A (or AAAA) record. You can check the host name's IP address with our A record lookup.
After I change my MX record, when does email start arriving at the new server?
The change starts to spread once the old record's TTL has expired, which can take from a few minutes up to 48 hours. Keeping the old mail server running for a while during the switch prevents lost messages.
Having Trouble with Your Email?
Our experts can check your MX records and fine-tune your email configuration.
