Exclaimer Anti-Spam for Exchange 4.01

Exclaimer Anti-Spam is one of the most powerful and accurate anti-spam systems available. This next-generation, class-leading technology uses a number of new techniques to prevent unwanted email reaching your users mailboxes. Exclaimer has none of the limitations and negatives associated with other anti-spam systems, requiring no training or maintenance, remaining highly effective over time, and keeping false positives to an absolute minimum.
Supports SPF (Sender Policy Framework) and SCL (Spam Confidence Level).