MX Validator

What are MX Records?

MX (Mail eXchange) records are a type of DNS (Domain Name System) record that specifies the mail server responsible for accepting email messages on behalf of a domain. The MX record is used to direct email to the correct email server, allowing email delivery to the intended recipient. The record contains the domain name and priority value of the mail server, allowing for multiple servers to be specified for redundancy and backup purposes.

Priority values in MX records indicate the order in which mail servers should be attempted for delivery. The mail exchange server with the lowest-numbered priority value is tried first, and if it is unavailable, the mail client will try the server with the next-highest priority. This allows for failover to a backup mail server if the primary server is unavailable. If multiple mail servers have the same priority value, they are used in a round-robin fashion. The priority value is an integer, with lower numbers indicating higher priority.

TTL (Time to Live) is a value in DNS (Domain Name System) records that determines the length of time that a DNS resolver is supposed to cache the information for a particular DNS record. When a resolver queries a DNS server for a record, it will cache the response along with the TTL value. The cached record will then be used to respond to subsequent queries for the same record, until the TTL expires. At that point, the resolver will discard the cached record and query the DNS server again for an updated version of the record.

MX for Popular Email Providers

Google Workspace (Gmail)

Google Workspace (formally known as G-Suite) is a collection of cloud computing and collaboration tools developed by Google. It includes Gmail, and the MX records for the Gmail is shown below.

Rackspace Email

Rackspace Email is a managed email hosting service provided by Rackspace, a cloud computing company. Rackspace Email provides users with a customized email solution that includes a range of features such as large mailbox storage, spam protection, virus scanning, and support for multiple email clients and mobile devices.

Zoho Email

Zoho Mail is yet another email service provided by Zoho Corporation. It provides a web-based email service that allows users to send and receive emails, manage contacts, and organize emails into folders.

How to use MX Validator

Use MX Validator when you need a fast, browser-friendly way to validate DNS and email authentication data. Enter the required value, review any validation hints, and run the tool to get a clear result that can be copied, downloaded, or used in your next workflow.

This DNS Tools utility is designed for repeatable checks and everyday troubleshooting. For best results, use complete and accurate input, review the output carefully, and combine the result with related tools when you need a broader diagnosis.

When this tool is useful

• Checking a value before publishing, deploying, or sharing it.
• Saving time on routine dns tools tasks.
• Comparing results with related IPLocation.net tools for a more complete review.
• Documenting a result for technical support, SEO work, security review, or development notes.

MX Validator tips

Keep a copy of the original input when comparing results, especially for DNS, web, image, PDF, text, and code tools. If a result depends on live network data, remember that DNS records, HTTP headers, certificates, rankings, and third-party responses can change over time.