Configuring Message Routing

X.400 Address Spaces

When defining an X.400 address space for a connector, you must provide the country/region name, administrative management domain name, and at least one of the following: private management domain name (p), organization name (o), or organizational unit name (ou). For example, an X.400 address space might look as follows:


If you are specifying a recipient address, you must specify a surname (s); however, you can also specify a given name (g), common name (cn), initials (I), and a generation qualifier (q). For example, an X.400 recipient address might look as follows:

g=Suzan;s=Fine;cn=Suzan Fine;o=NorthAmerica;p=Microsoft;a=<carrier>;c=US;

Attributes for X.400 address spaces and recipient addresses are shown in the following table.

Attribute Attribute Description Contents
c Country/Region: The country/region in which the connector is located. This is the connector through which mail is routed. 2 characters or 3 digits
a Administrative Management Domain (ADMD): The carrier or telephone service you use to transfer mail to other X.400 mail systems. 1 through 16 characters
p Private Management Domain (PRMD) : A unique name that you register with your carrier to identify your company. 1 through 16 characters
o Organization: The organization name where the server is located. To facilitate routing messages within your Exchange mail system, your X.400 addresses can mirror your internal organizational structure. 0 through 64 characters
ou1 through ou4 Organizational Unit (1 through 4): Allows additional refinement of addressing information for internal routing purposes. 0 through 32 characters
s Surname 0 through 40 characters
g Given Name 0 through 16 characters
I Initials: Differentiates employees who have the same name. 0 through 5 characters
q Generation Qualifier: Contains attributes such as Jr. or Sr., or academic and professional credentials. 0 through 3 characters
cn Common Name 1 through 64 characters

You can specify additional optional X.400 address attributes by using the Advanced tab of the X.400 address template. You can access the X.400 address template in the Recipients container in Address Templates. Select the appropriate language, select X.400, and then click the Advanced tab.

Attribute Attribute Description Contents
dda Domain-Defined Attributes: Custom recipient attributes. Domain-Defined Attributes have the format dda:type=value. You can have up to four Domain-Defined Attributes for a single X.400 address. Domain-Defined Attributes depend on order. When an address is parsed from left to right, the first Domain-Defined Attribute is encoded first, the second Domain-Defined Attribute is encoded second, and so on. Domain-Defined Attribute type: 1 through 8 characters. Domain-Defined Attribute value: 1 through 128 characters
n-id User Agent Numeric ID: A recipient identifier 0 through 32 digits
x.121 X.121 Address: The recipient's X.121 address. 0 through 15 digits
t-ty Terminal Type. The type of terminal used to receive messages. One of the following values: tlx, ttx, g3fax, g4fax, ia5, vtx
t-id Terminal Identifier: The terminal identifier used to receive messages. 0 through 24 characters

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

Related Topics

SMTP Address Spaces Microsoft Mail Address Spaces