Certified Ethical Hacker CEH · Free Practice Question Easy
Question 55
Danny, a black hat hacker, sends a huge number of email spams. He uses a SMTP server that allows email relay without authentication. Danny fakes the sender's identity to avoid blocking. This type of SMTP server is known as:
- A A. Closed mail relay
- B B. Open mail relay
- C C. Authenticated mail relay
- D D. Secure mail relay
Reveal correct answer
Correct answer: B
Explanation
Correct Answer: B. Open mail relay Explanation: SMTP (Simple Mail Transfer Protocol) servers are responsible for delivering email messages from one server to another. SMTP servers can be configured to allow email relay for specific IP addresses, domains, or users. When an SMTP server allows email relay without authentication, it is called an "open mail relay." This means that anyone can use the server to send emails without needing to provide any login credentials or authorization.Discussion
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