IMF auto update

Exchange 2003 SP2 includes Intelligent Message Filters (IMF) 2.0. Also an auto update option is available,
but this requires an additional registry setting.

Create a new key with the following details:

Location: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Exchange

Key: ContentFilterState

Type: DWORD

Value: 1

The updates are available on the Microsoft Update website (not on Windows Update), it is also
possible to use WSUS. On the Microsoft Update website choose the Custom update
option, there you should see the IMF update.

More information on http://blogs.technet.com/exchange/archive/2005/12/14/416070.aspx