Domain Name Macro and Class (D)

• The D class explicitly lists all domains for which this station should send mail directly by means of the local area network mailer.

• Mail for domains listed in the D class is sent directly to the destination station, if possible. No attempt is made to send the mail by means of a relay station.

• Mail for domains not listed in the D class is sent by means of a relay station associated with the destination station, if possible, rather than directly to the recipient station.

• If this station is a relay for a particular domain, you must enter that domain name in the D class. It is recommended that you always enter the domain name, regardless of whether the station is a relay or not.