The intrasite link is down on the Cisco Unity Connection due to DNS problems.
Which two options restore the intrasite link? (Choose two.)

A.
Change the hostname from FQDN to IP address.

B.
Enable the directory synchronization.

C.
Synchronize voice names with the remote network.

D.
Reboot the Cisco Unity Connection server.

E.
Fix the DNS servers.

F.
Troubleshoot the external message store.