Google Apps Directory Sync for Postini Services Administration Guide - Manual (Page 32)

Configuration 35
Exclusion rules are based on string values and regular expressions, not LDAP
settings.
This page shows the list of exclusion filters. In a new configuration, this will
contain two filters for default users. To add new exclusion filters, click the Add
Exclusion Filter button at the bottom of the screen.
On the list of Exclusion Filters, you can change existing filters as follows:
• Reorganize: Click the up arrow or down arrow icon to change the order of
exclusion filters.
• Edit: Click the notepad icon to edit the settings of an exclusion filter.
• Delete: Click the X icon to delete the exclusion filter.