What is an MX Record?
DNS record that specifies mail servers responsible for accepting email for a domain.
Detailed Explanation
MX (Mail Exchange) records direct email traffic to the correct mail servers. Each MX record has a priority value; lower numbers indicate higher priority. If the primary mail server is unavailable, the sender tries the next priority server. This system provides redundancy and load distribution for email delivery.
Examples
- •example.com MX 10 mail1.example.com
- •example.com MX 20 mail2.example.com (backup)
- •Multiple MX records for Gmail: 5 aspmx.l.google.com, 10 alt1.aspmx.l.google.com