What feature of Anti-Spam Defense determines the reputation of an e-mail?

IP addresses feed into sender reputation lookups such as SenderBase, but they are an input variable rather than the named feature that determines overall email reputation.

Threat analysis is a broader security process associated with malware sandboxing and intrusion detection, not the specific mechanism that scores email reputation in anti-spam systems.

Context analysis in Cisco's anti-spam defense examines a combination of message attributes - including content, headers, embedded URLs, and sender metadata - holistically to build a reputation score for an email. This multi-dimensional approach allows the system to identify spam and phishing messages based on behavioral and structural patterns rather than any single data point.

Encryption score is not a recognized metric or feature in Cisco anti-spam reputation systems.