Update IMF from Microsoft Updatehttp://exchangeis.com/blogs/exchangeis/archive/2005/12/29/93.aspxYou Had Me At EHLO... has a blog post on how enable Exchange IMF updates via Microsoft Update. The main points of the post are: Add registry key to enable HKLM\SOFTWARE\Microsoft\Exchange DWORD key ContentFilterState Value 1. The last 3 IMF data and binaryenCommunityServer 2.1 SP2 (Build: 61129.2)