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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.