Hosted Exchange 2010

MailChannels

MailChannels' Traffic Control software pre-filters incoming emails before they hit the network. It works by slowing down connections from new and otherwise not-yet-trustworthy senders, keeping spammers at bay. By prioritizing the delivery of legitimate emails while slowing down and blocking spam traffic, Traffic Control greatly reduces downstream server load, thus eliminating server congestion.

Cloudmark

The Cloudmark spam detection engine relies on the feedback of 180 million reporting sources from the Cloudmark Global Threat Network. This collective intelligence provides extremely rapid response to new and mutating threats. Fingerprints are generated for each incoming message and checked against known bad fingerprints to determine whether the message should be blocked or not.