A user directory is an important component of email traffic analysis, when it is used to set sender/recipient conditions for a policy. It can also provide recipient validation capabilities and be the basis of user logon authentication settings. See Managing user validation/authentication options for information regarding user authentication settings.

You can add a user directory from the Settings > Users > User Directories page.

Perform a keyword search of a user directory by clicking the View link in the Cache Size column on the Settings > Users > User Directories page for the appropriate directory. Enter a keyword in the search field (up to 100 characters) and click Submit Query to complete the search. Click Clear to empty the search field and display the complete user directory.

You can delete a user directory by selecting it in the user directories list and clicking Delete. You may delete a user directory only if that directory is not currently being used by an email function. For example, if the directory is being used as part of a policy or as part of user authentication settings, it cannot be removed.