MX Record

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An MX (Mail Exchange) record is a type of DNS (Domain Name System) record that specifies the mail servers responsible for receiving email on behalf of a domain. MX records are essential for the proper routing of email messages across the internet.

How MX Records Work

  1. Email Sending: When someone sends an email to an address at your domain, the sending mail server queries the DNS system to find the MX records associated with the recipient’s domain.
  2. DNS Query: The sending server performs a DNS lookup for the recipient’s domain to retrieve the MX records. These records provide the addresses of the mail servers that are designated to receive email for that domain.
  3. Mail Server Selection: The sending server uses the priority values specified in the MX records to determine which mail server to send the email to. The server with the lowest priority value (highest preference) is tried first.
  4. Email Delivery: If the preferred mail server is unavailable, the sending server will attempt to deliver the email to the next available server based on the priority order specified in the MX records.

 

How Can I Set My MX Records?

To edit or add MX records, you need to access your domain name provider’s website, log in to your Control Panel, and locate the DNS settings. In these settings, you’ll find a field labeled “Name” where you need to enter your domain name. Other important fields include “Type,” which should always be set to MX, “Class,” which should be set to IN (Internet), and “TTL” (Time to Live), which determines how long it takes for the update to take effect, measured in seconds. The “Priority” field is crucial when you have multiple MX records, as it allows you to assign different priorities to each mail server. This way, if the primary server is down, the next one in line will receive the emails. The server with the lowest priority number is contacted first, and if it fails, the next one is tried. Finally, the “Data/Server” field should contain the hostname of your domain’s mail server.

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