I have implemented Microsoft's SPAM filer IMF (Intelligent Message Filter) for Exchange 2003 at a many customers now, but IMF is missing a major feature in my pinion:whitelisting.

Daily the same false positives (legitimate email blocked as spam) have to be resubmitted out of the spam archive, a whitelist feature could solve this, like: allways trust NewsletterX@company.com. Fourtunatly I'm not the only one with this issue and I found a tool that provides a solution for this and more! The tool integrates smoothly in the Exchange System Manager. Though IMF is free, this tool is 249 for a single license (SMTP connector)

SecurExchange IMF edition extends the IMF by:

• Allowing any number of thresholds to be defined with different actions for each threshold range. For instance, a SCL rating of 4-6 can be assigned "Quarantine", while a SCL rating of 7-9 could be assigned "Delete"
• Providing additional actions available to a triggered message.
• Additional actions like "reroute", "move to any sub folder", "copy to user", "send a message", and others may be assigned. Moving a message to any subfolder does not require Outlook 2003.
• Allowing different thresholds and corresponding actions amongst different user groups.
• For instance in a school environment, the "staff" group may have messages quarantined for a SCL range, while the "students" group would have those messages deleted.
• Automatically or manually allow business partner's messages to bypass Exchange's IMF through SecurExchange's Friendly Domain capability, minimizing false positives generated by the IMF
• Creating Safe Sender's lists to prevent Exchange's IMF from archiving or deleting messages on the SMTP gateway / frontend server that exceed the gateway 's IMF threshold.

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