An on-premises user is trying to send an email to a user who is in the IBM SmartCloud
Notes service. The email is returned to sender with an error stating: No route found to
server MAIL9/SMARTCLOUD/XYZ from server MAIL1/SERVER/XYZ. Which statement
describes the most likely reason for this message?

A.
The on-premises mail-routing hub cannot connect to SmartCloud Notes because of a
misconfigured firewall.

B.
The on-premises mail-routing hub is not running IBM Lotus Domino Server 8.5.1 Fix Pack
2 or later.

C.
The connection document between CustomerMailHubs and LLNMailHubs is missing or
misconfigured.

D.
The wildcard connection document for */SMARTCLOUD/XYZ servers is missing or
misconfigured.