Which of these is a blacklist server?

Question

Options

• AA server that provides a list of known open relay servers
• BA server that blocks outgoing email to specified domains
• CA server that sends mail to a large recipient group simultaneously
• DA server that allows anyone to send email through it without authenticating
• EA server that provides a list of email addresses that are known sources of spam

• A
  74% (23)
• B
  6% (2)
• C
  3% (1)
• D
  13% (4)
• E
  3% (1)

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