MX-Record (EN)

MX-Record

The MX-Record (Mail Exchange) is a DNS record type that specifies the mail servers for a domain and enables email delivery. It contains priority values that determine which mail server should be preferred when multiple servers are configured for a domain. MX-Records are essential for email traffic on the internet and enable the forwarding of emails to the correct mail servers based on the recipient's domain.

Email Delivery Data Flow

sequenceDiagram     participant A as Sender     participant DNS as DNS Server     participant MX as MX Record     participant MTA as Mail Transfer Agent     participant MB as Mailbox          A->>DNS: Request MX-Record for domain.com     DNS->>MX: Deliver MX-Record with priority     MX->>MTA: Forward email to mail server     MTA->>MB: Email delivery     MB-->>A: Confirmation (optional) 

In Context

• Typically used together with A-Records and TXT-Records
• Related to: DNS, Domain, Email-Server, SMTP
• Example usage: domain.com MX 10 mail1.domain.com, MX 20 mail2.domain.com