MX Lookup and Record Checker Tool

Try the free MX Lookup Tool to check your MX records and verify if an email server responds correctly to your domain.

Priority Host Name TTL
10 3600
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Why Do You Need MX Lookup and Record Checker Tool?

An MX Lookup checks the domain's authoritative name server directly. It means any changes to the MX records appear right away. The tool can also run several tests to ensure the setup is correct. It verifies the server's reverse DNS records, checks if the server is an open relay, and measures the server's response time.

An MX Lookup tool is crucial for managing email delivery for a domain. It ensures emails are routed correctly and securely by providing detailed information about the mail servers and verifying their setup.

MX Lookup and Record Checker

Expert Tips to Manage Mx Layer’s MX Lookup Tool Online


Access the Tool: Go to the MX Layer's MX lookup tool. Type the MX record you want to check into the search bar.


Execute the Search: Click "Search" to start the MX DNS lookup.


Alternative DNS Servers: If needed, select different DNS servers.


Review Results: The tool will display the results, highlighting key information.

MX Record Examples

An example MX record may look like the following:

Record Type Priority Value TTL MX 10 3600
  • is the domain for which the MX record is defined.
  • The TTL (Time To Live) in seconds is 3600, which specifies how long DNS resolvers cache the record.
  • IN stands for Internet.
  • MX is the record type.
  • 10, 20, 30 are the priorities. Lower values have higher priority.
  •,, are the mail servers. If the highest priority server ( is not available, the mail will be sent to the next highest priority server (

Backup MX Records

Backup MX records prioritize which mail server should process the email first.

Record Type Priority Value TTL MX 10 3600 MX 20 3600

Load Balanced MX Records

Multiple MX records with the same priority value allow for load balancing across multiple mail servers. This setup ensures that no single server is overwhelmed by the email load.

Record Type Priority Value TTL MX 10 3600 MX 10 3600

Here, either or will handle the email, with the selection being random to distribute the load evenly.

Load Balanced and Backup MX Records

Combining load balancing and backup strategies provides both redundancy and efficient load distribution.

Record Type Priority Value TTL MX 10 3600 MX 10 3600 MX 20 3600

In this example, and (both priority 10) will share the email load equally. If both servers fail, the email will be handled by (priority 20).

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Frequently Asked Questions

An MX lookup involves querying a domain's DNS to find its Mail Exchange (MX) records. These records specify the mail server responsible for accepting emails on behalf of the domain.

Invalid and incorrectly configured MX records prevent emails from being delivered to the appropriate mail servers. As a webmaster or email administrator, you will not be able to receive emails if your MX records are not properly configured or are missing. Checking your domain’s mail exchange records helps avoid such unwanted issues.

You can check MX records using tools like 'dig' on Mac or 'nslookup' on Windows. On Mac, open Terminal and type dig mx. On Windows, open Command Prompt and type nslookup -q=mx

The MX priority value specifies which MX server should be accessed first for incoming emails. For both records, MX Layer sets the priority value to "10" to evenly balance the load between the two servers.

TTL, short for Time to Live, indicates how long the defined DNS record should be cached, in seconds. This value helps prevent your server from causing extra load from queries coming from other servers.

To check the MX records for a certain domain name on a Mac, follow these steps:
- Open a terminal by entering [command] + [space] → '' → [enter].
- Type dig mx and hit [enter] to get the MX records for
- The MX records are listed below the ANSWER SECTION heading.

To check the MX records for a certain domain name on Windows, follow these steps:
- Open a command prompt by navigating to Start → 'Type here to search' → 'cmd' → Open.
- Type nslookup -q=mx and hit [enter] to get the MX records for
- The MX records are listed below the Non-authoritative answer heading.

A DNS lookup asks a DNS server for details about a domain or subdomain, like IP addresses (A or AAAA records) and mail servers (MX records). An MX lookup specifically finds Mail Exchange records, ensuring emails reach the correct mail server for a domain.

Yes. MX Layer ensures that its MX checker provides real-time data by retrieving the most up-to-date MX records from the DNS servers responsible for the respective domains. However, DNS records can change, so the accuracy of the results depends on the domain's DNS configuration at the time of the query.

Usually, the company providing your nameservers controls your MX records. You can manage your DNS records in their control panel.

Yes. A domain can have multiple MX records. These records, with different priorities, allow for redundancy and load balancing. The sending mail server tries to deliver the email to the mail server with the lowest priority (highest priority value) first. If that server is unavailable, it tries the next one, and so on, until it either delivers the email or runs out of MX records to try.

In MX records, the number represents the priority. When sending an email, the email servers check the MX records of that domain. They send it to the mail server with the lowest value first because it has the highest priority. If sending to that server fails, it tries the next one. The backup MX record is another MX record with a higher value.