WinDeveloper.com's IMF Tune has long commanded a good reputation amongst Exchange Server administrators for its ability to address configuration shortcomings native to the Exchange Intelligent Message Filter (IMF).
The third-party add-on allows for fine-grained adjustments to the behavior of Exchange IMF. Among its biggest past features were the ability to integrate most any antispam filter into Exchange Server, easy whitelisting and blacklisting, and detailed activity logging.
WinDeveloper.com recently released a public beta of IMF version 3, which has been running internally as a development product for several months. After extensive user feedback on the previous version, many new features have been added:
- The way the program deals with archived emails and logs has been totally reworked. The size of log files is now configurable (it used to top out automatically at 10 MB per log), and it's now possible to have the program generate daily logs instead of logs that are segmented at some arbitrary size interval. Older logs can also be purged automatically as needed.
- A new "Keyword Reporting" feature makes it possible to create reports that describe how much (or little) email is matching the whitelists, blacklists and Spam Confidence Level (SCL) rules. This way, if you find a given rule is not useful, it can be refined or discarded entirely.
- More advanced SCL rules are now possible, with a broad range of conditions and exceptions that can be applied to each email message, including many new criteria that only exist in IMF Tune version 3. The rules are patterned loosely after the rules system in Microsoft Outlook, so multiple conditions or exceptions can be stacked or chained together through a wizard interface, and the resulting rule is described in plain English.
- Better sender-based filtering, so that a wider range of sender fields can be processed (including Resent-From and Resent-Sender). This way, legitimately forwarded messages don't get spam-trapped.
- Processing for MIME body-part headers, so that MIME-encoded bodies of email messages have their contents processed by IMF Tune as well (where before it was only the header block).
Right now, the beta of IMF Tune version 3.0 doesn't ship with updated documentation (it still uses the docs from 2.8). But updates to the documentation and the supplementary utilities should be included by the time the product is formally released.
IMF Tune pricing varies. For enterprise licenses, it costs U.S. $315 for one to three servers, $265 for four to nine servers, and $210 for 10 or more servers.
About the author: Serdar Yegulalp is editor of Windows Insight, a newsletter devoted to hints, tips, tricks, news and goodies for all flavors of Windows users.
Do you have comments on this tip? Let us know.
Please let others know how useful this tip was via the rating scale below. Do you have a useful Exchange Server or Microsoft Outlook tip, timesaver or workaround to share? Submit it to SearchExchange.com. If we publish it, we'll send you a thank-you gift only an IT geek could love.
Dig Deeper on Spam and virus protection