Hi Sean,
When using LDAP as your backing authentication realm, Integrity pulls its user data from the directory service. If you want to blank-out the user email addresses you will need to had an LDAP administrator blank-out the mail address of the user object in AD.
Note that this change will not be seen until the next time Integrity refreshes its cache by pulling directory data for that user account. Refreshing the user/group cache does not guarantee this update, however, there is server-wide property which controls the frequency of updates:
mksis.ldapCacheRefreshInterval (note the default time of 12 hours)
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Also, an Integrity Server restart will force the update though this is not always an option throughout the day.
