Exchange Intelligent Message Filter

Are you maximizing Exchange IMF's antispam and antiphishing capabilities? Take our Crash Course and learn how to update your IMF spam definitions using Microsoft Update, display SCL rankings in Outlook for incoming email, and enable IMF on authenticated SMTP connections. You'll also learn more about third-party tools that allow more granular control over Exchange Server 2003's IMF functionality.

Exchange Intelligent Message Filter (IMF) can help thwart unsolicited commercial email (UCE), but are you maximizing its antispam and antiphishing capabilities? Take our IMF Crash Course and learn how to update your IMF spam definitions using Microsoft Update, display SCL rankings in Outlook for incoming email, and enable IMF on authenticated SMTP connections. You'll also learn more about third-party tools that allow more granular control over Exchange Server 2003's IMF functionality.
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RELATED INFORMATION:
»Learning Guide: How to fight
   spam on Exchange Server
»The spamfighter's toolbox
»Spam Reference Center
TUTORIALS AND TIPS -------------------------------------------------------------------------------------------------------
Microsoft hotfix offers selective Exchange IMF filtering
Microsoft has released a hotfix that updates Exchange IMF's MSGFILTER.DLL component to allow select users' incoming email to be exempted from IMF processing.
How to enable automatic Exchange IMF updates via Microsoft Update
Learn how Exchange Server 2003 SP2 and later can be set up to automatically obtain and install new versions of IMF through the Microsoft Update Web site.
How to display IMF's Spam Confidence Level (SCL) rankings in Outlook
Learn how to create a custom Microsoft Outlook form that exposes Exchange Server Intelligent Message Filter's SCL rankings for all incoming email.
How to enable the Exchange Server IMF on authenticated SMTP connections
Normally, the Exchange Server IMF only works on anonymous SMTP connections. But you can edit the registry to make IMF work on authenticated connections too.
TOOLS -------------------------------------------------------------------------------------------------------------------------------
Simplified IMF Spam Confidence Level rankings for Microsoft Outlook
You no longer have to use a custom form if you want to display Exchange IMF's Spam Confidence Level rankings in Microsoft Outlook. There's now a freeware plug-in available that significantly simplifies the process.
Tune up your Exchange Intelligent Message Filter with IMF Tune
IMF Tune is a third-party tool designed to allow extremely fine-grained tuning of Exchange Server 2003's Intelligent Message Filter.
Freeware tool allows greater control of Exchange's built-in spam filter
IMFCompanion is a no-cost spam tool that provides greater administrative control of Exchange 2003's Intelligent Message Filter functionality.
WEBCASTS ------------------------------------------------------------------------------------------------------------------------
Locking down Exchange Server: Securing Exchange Server 2003
Learn how to secure OWA, control message delivery, manage spam and the IMF, implement attachment blocking, protect your infrastructure with a good front-end/back-end configuration, and improve Exchange security with ISA 2004.
EXPERT ADVICE ----------------------------------------------------------------------------------------------------------------
Intelligent Message Filter installation issue
Our Exchange Security expert, Richard Luckett, provides options for manually removing the Exchange Intelligent Message Filter (IMF).
Managing 'banned word' list in Exchange's spam filter
Find out where to start looking for the cause of the undeliverable error: "This message has been blocked because it contains a banned word."
Enabling Custom Weight List functionality after Exchange 2003 SP2 upgrade
Learn how to enable Custom Weight List -- the .XML file used for the Intelligent Message Filter's 'Bad Word List." -- after an Exchange 2003 SP2 upgrade.
This was first published in July 2006

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