What is an MX record?
MX stands for Mail Exchange. It is the DNS record that tells other mail systems which server should receive email for a domain.
When someone sends a message to user@yourcompany.com, the sending mail server looks up the MX records for yourcompany.com.
An MX record normally points to a hostname
An MX record generally identifies a mail server hostname such as mail.yourcompany.com. That hostname is then resolved to an IP address using A or AAAA records.
What does MX priority mean?
A domain can have multiple MX records. The server with the lower priority number is normally attempted first. Additional MX servers can provide alternative delivery routes.
Incorrect MX records can stop mail delivery
If the MX record points to the wrong server or is missing, messages sent from external systems may not reach the company’s email platform.
Be careful during migrations
When moving email to another provider or server, MX records must be changed at the correct time. DNS propagation and temporary availability of the old server can reduce the risk of lost messages.
MX1Mail and domain configuration
In addition to MX records, technologies such as SPF, DKIM and DMARC should also be correctly configured to build a reliable and secure business email environment.