You have an Exchange organization.All servers in the organization have Exchange Server 2010 Service Pack 1 (SP1) installed.The network contains an internal root certification authority (CA).Users on the network use Outlook Anywhere.A Client Access server uses a wildcard certificate issued by a trusted third-party root CA.You need to ensure that users can send and receive encrypted e-mail messages by using S/MIME. What should you do?()
- A、Instruct all users to import the third-party root CA certificate.
- B、Import the internal root CA certificate to the Client Access server.
- C、Instruct all users to import the internal root CA certificate.
- D、Issue a certificate to each user from the internal root CA
正确答案:D
答案解析:有

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