A server used to send or receive Internet mail. Specifically, MX refers to a type of DNS record that specifies the server handling the mail for a given host or domain.

A Mail eXchanger is a type of DNS record that allows you to redirect mail for a given domain or subdomain. MX records can be set on a host-by-host basis to point to other hosts on the Internet (usually with permanent connections) that are set up to accept and/or route mail for your hostname(s). Setting a Backup MX makes the entry you specify a secondary mail exchanger. This means that delivery will be attempted to your host first, and then to the host you specify if that fails. () () () () () ()

a computer that receives mail for another domain name

a host that will accept and properly deliver e-mail for a particular domain

a host that will either process or forward mail for the domain name

a type of DNS record that allows you to control the delivery of mail for a given domain or subdomain

Host that accepts electronic mail, some of which act as mail forwarders. See also MX record.

A computer that accepts electronic mail. Some mail exchangers forward the mail to other computers. DNS has a separate resource record type (MZ) for mail exchangers.

Internet-connected computer that processes or forwards e-mail messages sent to a domain name. .

A mail transfer agent or MTA (also called a mail server, or a mail exchange server in the context of the Domain Name System) is a computer program or software agent which transfers electronic mail messages from one computer to another.

The DIGITAL TCP/IP Services for OpenVMS implementation of a mail exchanger that allows hosts in a local network to forward mail to systems that might not be directly connected to the local network.