Certified Incident Handler (CIH) Practice Ecam

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What is the SMTP status code indicating that a mail action was aborted due to exceeded storage allocation?

  1. 550

  2. 551

  3. 552

  4. 553

The correct answer is: 552

The SMTP status code indicating that a mail action was aborted due to exceeded storage allocation is 552. This code specifically indicates that the action could not be completed because the recipient's mailbox is full, essentially meaning that there is insufficient storage space to accept the incoming email. In practical terms, when a mail server tries to deliver an email to a recipient whose mailbox is already full, it will respond with this status code to inform the sender of the issue. This allows the sender to understand that while the email was sent successfully on their end, the recipient's mail server has prevented the delivery due to storage limitations. The other status codes listed serve different purposes: for example, 550 generally signifies that the requested action failed because the mailbox does not exist or is unavailable, while 551 indicates that the recipient is not at the specified domain. Code 553 generally relates to issues with the command syntax or the mailbox name being invalid. Thus, each code plays a distinct role, but in the case of storage issues specifically, 552 is the appropriate response.