Which feature must be activated on a Cisco Secure Email Gateway to combat backscatter?

Question

Options

• AGraymail Detection
• BBounce Verification
• CForged Email Detection
• DBounce Profile

• A
  5% (1)
• B
  90% (18)
• C
  5% (1)

Explanation

Backscatter refers to the flood of misdirected bounce (Non-Delivery Report) messages that arrive at an organization because spammers forged that organization's domain as the 'From' address. Bounce Verification combats this by applying a Bounce Address Tag Validation (BATV) tag to all outgoing messages. When a bounce message is received, the appliance checks whether the tag in the bounce address matches a tag it generated for a legitimate outgoing message. If the tag is absent or invalid, the bounce is identified as backscatter and can be rejected. Graymail Detection (A) handles bulk marketing and newsletter email. Forged Email Detection (C) identifies inbound messages with spoofed headers. Bounce Profile (D) controls how the appliance handles delivery failures but does not validate whether incoming bounces are legitimate.

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