A financial analyst is expecting an email containing sensitive information from a client. When the email arrives, the analyst receives an error and is unable to open the encrypted message.
Which of the following is the MOST likely cause of the issue?
A . The S/MME plug-in is not enabled.
B . The SLL certificate has expired.
C . Secure IMAP was not implemented
D . POP3S is not supported.
Answer: A