Exchange 2003 SP2 - Intellinget message filter “just too intelligent” :)
Microsoft - Exchange 2003 SP2 - Intelligent message filtering v2 - deleting Sharepoint services notifications on the same machine!!! Can be resolved using MIN and MSExchange.UceContentFilter.xml described in the article below.
http://www.msexchange.org/tutorials/Intelligent-Message-Filter-version-2-IMF-v2.html
Microsoft - Exchange 2003 SP2 - Intelligent message filtering v2 - Exclude …
http://support.microsoft.com/?id=912587