Topic Last Modified: 2007-01-24

If you enable Lightweight Directory Access Protocol (LDAP) routing for a Simple Mail Transfer Protocol (SMTP) virtual server, you can configure the SMTP virtual server to consult an LDAP directory to resolve senders and recipients.

Procedure

To set LDAP routing information

  1. Select Properties for the SMTP virtual server you want to configure in Microsoft Management Console. For instructions about how to start Microsoft Management Console, see Start Microsoft Management Console.

  2. Click the LDAP Routing tab.

  3. Select the Enable LDAP routing check box.

  4. Set options as described in the following table.

The following table describes the available options.

Option Description

Server

Type the name of the computer that is running the LDAP directory. The field is not applicable when you use the Exchange LDAP Service schema type, because the service will find a nearby server and use it automatically.

Schema

Select a schema type. For more information, see Selecting a Schema Type.

Binding

Select the authentication method to use when binding to the LDAP server. For more information, see Determining the Authentication Level.

Plain text transmits passwords in clear text. To use the strongest authentication method that is available for the SMTP virtual server, select Windows SSPI. For no authentication, use Anonymous, which is the default. The Service account binding type uses the credentials of the account that is trying to bind to the LDAP server.

Domain

Type the domain of the account that you want to use to bind to the LDAP directory. This option applies if you select the Plain text or Windows SSPI binding types.

User name

Type the distinguished name (DN) of the account you want to use to bind to the LDAP directory. For example, cn=user1,ou=users,o=company. This option applies if you select the Plain text or Windows SSPI binding types.

Password

Type the password that is used for logging on to the directory service. This option applies if you select the Plain text or Windows SSPI binding types.

Base

Type the distinguished name of a container in the directory service that you're accessing. This setting specifies where you want the SMTP service to start to search in the LDAP directory. The search will begin in the container and will continue to subcontainers if necessary.