In Europe, your company has one main office and five branch offices. In Asia, the company has one main office
and five branch offices. Each main office contains a data center.
The network contains an Active Directory forest. The forest contains a single domain named contoso.com.
Each office is configured as an Active Directory site.
All client computers are joined to the domain.
You plan to deploy Exchange Server 2013 servers to both data centers.
You need to recommend a client connectivity solution that meets the following requirements:
Users who connect from the Internet must be configured automatically to connect to their mailbox by using
Outlook Anywhere.
Users from the branch offices must use Outlook Anywhere to connect to the Client Access servers in their
respective region.
What should you include in the recommendation?
A.
A service connection point (SCP) in Active Directory and a host (A) record in the public DNS zone
B.
A service location (SRV) record in the internal DNS zone and a service location (SRV) record in the public
DNS zone
C.
A service connection point (SCP) in Active Directory and an inbound port rule for TCP 389
D.
A service location (SRV) record in the public DNS zone and an inbound port rule for TCP 389
Explanation:
You must provide a host service (SRV) resource record in DNS for Outlook clients to discover the Autodiscover
service by using DNS.
We should provide two SRV records, one for the internal DNS zone and one for the public DNS zone.
Incorrect answers:
Not A: Service Connection Points (SCPs) are objects in Active Directory that hold information about services,
but SCP would not be useful for setting up Outlook Anywhere. Instead we need to configure the DNS.
Not C, not D: TCP port 389 is the LDAP protocol, but Outlook Anywhere does not use this port so there is no
need for a port rule for it.
The Windows RPC over HTTP Proxy component, which Outlook Anywhere clients use to connect, wraps
remote procedure calls (RPCs) with an HTTP layer. This allows traffic to traverse network firewalls without
requiring RPC ports to be opened.
https://social.technet.microsoft.com/forums/exchange/en-US/957873ea-ea46-468e-843efae939ee1b82/srv-records-to-enable-auto-discover-for-outlook-anywhere