About SPAMfighter Exchange Anti Spam Module:

SPAMfighters email server spam filter seamlessly integrates with Microsoft Exchange Server, making the solution very fast and safe to use.
As email arrives and the Exchange Server routes it to its addressees, SEM makes a unique encrypted signature for each message and sends it to the SPAMfighter Server for evaluation. If the SPAMfighter Server determines that a message is spam, it notifies SEM and the spam mail is moved to the user's spam folder.

SPAMfighter Exchange module also offers reporting, so administrators can review statistics on how many messages SEM is filtering, how many users are enabled, and more.

In addition, SEM is very simple to use for end users, as spam is automatically moved to the Spam folder. While SEM simplifies administration and keeps software and configuration off the employee's desktop, it also provides individual control for end user's if the administrators decide they want this.