Phishing, Virus and Spam Filter for Microsoft Exchange

Cloudmark Server Edition communicates with the Microsoft Exchange Server through Microsoft's standard Messaging Application Programming Interface (MAPI). It receives notifications when messages arrive, then checks the messages and performs preconfigured actions on messages that are spam, phishing, or viruses.

1. Compute Fingerprints

When new messages arrive, CSE computes a unique "fingerprint" for each one and sends these to Cloudmark for evaluation. During this period, Exchange continues routing messages without interruption.

2. Verdict

When Cloudmark receives fingerprints from CSE, it compares them with those of messages already known to be spam or phishing. If a match is found, Cloudmark notifies CSE.

3. Action

When spam, phishing or viruses are found, they are automatically tagged or moved to a spam folder. You can configure this spam-filtering action.

4. End-User Feedback

End users can contest the status of a message by moving it into or out of the spam folder. CSE reports this feedback to Cloudmark, where it is used to re-evaluate how messages with similar fingerprints are filtered. CSE can re-scan mailboxes periodically to apply the latest end-user feedback.