Mail Exchange Record


Mail Exchange Record

(messaging)(MX Record) A DNS resource record type that sayswhich SMTP server handles electronic mail for a particulardomain. E.g. the MX record

foo.co.uk. 1054 IN MX 10 mail.foo.co.uk.

means that mail for an address like "denis@foo.co.uk" shouldbe sent to "mail.foo.co.uk".

There can be several servers for a domain. The "10" is apriority - the server with the lowest number will be triedfirst.