Go to the Security Server console.
On the Security Server console, click Updates > Manual Update.
Expand the Messaging Security Agent to see its components.
Take note of the following:
Messaging Security Agent Anti-spam pattern
Messaging Security Agent scan engine
Messaging Security Agent pattern
Go to the Exchange Server.
Go to Start > All Programs > Trend Micro Messaging Security Agent > Real-time Monitor.
Take note of the following: Spam pattern Scan engine Virus pattern Compare the information that you got from Steps 4 and 7.
Update spam pattern, scan engine, or virus pattern, whichever is necessary. You may refer to the KB articles below for instructions: