Note: IMF updates are available every first and third Wednesday.
When the Exchange Server team cannot release the update on a Wednesday, they will release the update on the following day.
Note: The IMF auto-update feature is only available in on a server that is running Exchange Server 2003 SP2 or a later, or on a server that is running both Microsoft Small Business Server and Exchange Server 2003 SP2 or a later.
The IMF updates are made available through Microsoft Update and Automatic Updates technologies.
The subfolders are named according to the version number of the updates.
For example, after you install several updates, the folder structure may appear as follows: Drive_Letter:\Program Files\Exchsvr\Bin\MSCFV2 Drive_Letter:\Program Files\Exchsvr\Bin\MSCFV2.5.7612.0 Drive_Letter:\Program Files\Exchsvr\Bin\MSCFV2.5.7615.0 Drive_Letter:\Program Files\Exchsvr\Bin\MSCFV2.5.7620.0 The registry entry that is described in the "How to Enable Updates" section reflects the state of the Intelligent Message Filter.
You can also use Windows Server Update Services (WSUS) and System Management Services (SMS) to deliver the updates in a corporate environment.
Organizations can also use Windows Server Update Services (WSUS) and System Management Services to deliver the updates in a corporate environment.
The update package installer knows which update is currently being installed.
The update package installer compares that value to the current registry entry value.
MS KB 907747 has more: Microsoft Exchange Intelligent Message Filter is a product developed by Microsoft to help companies reduce the amount of unsolicited commercial e-mail (UCE), or spam, received by users.
Intelligent Message Filter version 2 feature that is included with Exchange Server 2003 SP2 can be configured to auto-update itself, thus keeping it current and effective, and up-to-date with the latest updates released twice par month by Microsoft.
Before editing the registry, back up any valuable data. The version numbers are consistent with the Exchange Server build number, such as 6.5. The update package version of an Intelligent Message Filter update is based on the date of the package build.