【单选题】You have a server named Server1 that runs Windows Server 2008. The server has the Web Server (IIS) server role installed. You have an SMTP gateway that connects to the Internet. The internal firewall...
A.
On Server1, install the SMTP Server feature.
B.
On Server1, configure the SMTP E-mail feature for the Web site.
C.
On an internal DNS server, create an MX record for Server1.
D.
On an internal DNS server, create an MX record for the SMTP gateway.