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Topic starter
16/06/2022 11:51 am
An organization is experiencing issues with emails that are being sent to external recipients Incoming emails to the organization are working fine. A security analyst receives the following screenshot ot email error from the help desk.
The analyst the checks the email server and sees many of the following messages in the logs.
Error 550 -Message rejected
Which of the following is MOST likely the issue?
- A . The DMARC queue is full
- B . SPF is failing.
- C . Port 25 is not open.
- D . The DKIM private key has expired
Suggested Answer: A