Your company’s internal domain and external domain are contoso.com. You plan to enable Microsoft Outlook Autodiscover functionality. You make the required DNS changes to the external DNS server. Autodiscover features are not working. You need to ensure that the Autodiscover features work. What should you do?

A. Add an A record for contoso.com on the internal DNS server.
B. Change the DNS record from .com to .local.
C. Add a CNAME entry for autodiscover.outlook.com to the internal DNS server.
D. Add a TXT record for contoso.com at the domain registrar.

Correct Answer: C