Fully qualified domain address
A fully qualified domain address (FQDA) is a
e-mail address. It was defined by the Internet Engineering Task Force in RFC 3801 for the use in voice profiles for Internet mail,[1]
but has been used on the Internet as early as 1988.
A FQDA is composed of a local part, followed by the symbol @ and the fully qualified domain name (FQDN) of the host responsible for a mailbox.
An example of a FQDA is: [email protected]. The local part usually denotes a username, while the fully qualified domain name is used by
mail transfer agents to determine the IP address of the host by querying the Domain Name System
.
References
- ^ RFC 3801, Voice Profile for Internet Mail - version 2 (VPIMv2), G. Vaudreuil, G. Parsons (June 2004)