Google Apps Directory Sync for Postini Services Administration Guide - Manual (Page 64)

Configuration 67
Once you’ve completed all required fields, you will be able to use the Simulate
Sync button to simulate a synchronization.
Once you’re ready, click Simulate Sync. You will see the Simulate Sync page.
During simulation, Configuration Manager will:
• Connect to the message security service and generate a registered user list.
• Connect to your LDAP server and generate an LDAP user list.
• Generate a list of differences.
• Log all events.
• If connection was successful, show a Proposed Change Report which shows
what changes would have been made to your message security service user
list.
Note: Simulate Sync will never update or change your LDAP server or your users
in the message security service. The simulation is strictly for configuration and
testing. To run an actual synchronization, use the command line. See
“Synchronization” on page 69 for more.