X.400 Recipient Addresses

A recipient address is a collection of information that identifies a specific message recipient. It must be unique and complete to correctly identify an e-mail recipient. A Microsoft Exchange Server X.400 recipient address consists of a display name (up to 55 alphanumeric characters) and the address attributes shown in the following table.

Note   You must provide the country name, administrative domain name, and at least one of the following: private domain name, personal name, organization name, or organizational unit name. If you use a personal name, you must specify a surname. You can also use a given name, initials, or a generation qualifier.

The following is an example of an X.400 address:

g=Bill;s=Lee;cn=Bill Lee;o=NAmericaW;p=fab;a= ;c=US;

Attribute	Attribute description	Contents
g	Given Name	0 through 16 characters
s	Surname	0 through 40 characters
I	Initials	0 through 5 characters
q	Generation Qualifier	0 through 3 characters
cn	Common Name	1 through 64 characters
o	Organization	0 through 64 characters
ou1 through ou4	Organizational Unit (1 through 4)	0 through 32 characters
p	Private Management Domain (PRMD)	1 through 16 characters
a	Administrative Management Domain (ADMD)	1 through 16 characters
c	Country	2 characters or 3 digits

Additional optional X.400 address components are available in the Microsoft Exchange Server Administrator program Advanced property page for recipient objects.

Attribute	Attribute description	Contents
dda1-4	Domain-Defined Attributes	Custom recipient attributes identified with a type and value.
	DDA Type	The custom attribute name (1 through 8 characters).
	DDA Value	The custom attribute value (1 through 128 characters).
n-id	User agent numeric ID	A recipient ID (0 through 32 digits).
x.121	X.121 address	The recipient's X.121 address (0 through 15 digits).
t-ty	Terminal type	The terminal type used to receive messages.
t-id	Terminal identifier	The terminal ID used to receive messages (0 through 24 characters).

For more information about X.400 addressing, see the International Telegraph and Telephone Consultative Committee (CCITT) X.121 Recommendation.