Which of the following descriptions of the email content filtering operating mechanism is incorrect?

Question

Options

• AThe firewall first needs to identify the traffic to be filtered based on matching conditions.
• BWhen a POP3 or IMAP message is detected, if it is determined to be an illegal email, the firewall's
• CEmail content filtering is only detected in the outbound direction
• DAfter the firewall filters out email traffic, it then checks the email address and attachment size to

• A
  10% (4)
• B
  3% (1)
• C
  82% (32)
• D
  5% (2)

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