You can import LDAP Data Interchange Format (LDIF) or comma-separated values (CSV) files into Trend Micro Email Security. This helps Trend Micro Email Security to better filter and process messages for valid email addresses. Messages to invalid email addresses will be rejected.
Trend Micro Email Security uses user directories to help prevent backscatter (or outscatter) spam and Directory Harvest Attacks (DHA). Importing user directories lets Trend Micro Email Security know legitimate email addresses and domains in your organization.
Trend Micro Email Security also provides a Synchronization Tool that enables you to synchronize your current groups and email accounts from the Active Directory, Open LDAP and Azure AD servers with the Trend Micro Email Security server.
The Directory Management screen includes the following tabs:
Synchronization Authentication Key: Displays the Synchronization Authentication Key, which is a global unique identifier for your Directory Synchronization Tool to authenticate its access to Trend Micro Email Security.
Downloads: Displays the download paths for the Directory Synchronization Tool and Directory Synchronization Tool User's Guide.
Synchronization Summary: Displays the number of valid recipients, groups and email aliases synchronized using the synchronization tool.
Synchronization History: Displays the synchronization history.
Import User Directory: Selections for importing a new user directory file.
Imported User Directory History: The current user directory file(s) that Trend Micro Email Security is using.
Valid recipients: Exports the existing valid recipients to a CSV file.
Groups: Exports the existing groups to a CSV file.
Email aliases: Exports the existing email aliases to a CSV file.