You have an Exchange Server 2010 organization named contoso.com that contains a mail-enabled group named Group1.
Users from outside the organization report that email messages sent to [email protected] generate a non-delivery report (NDR).
You need to ensure that users outside the organization can successfully send email to group1 @ contoso.com.
What should you modify?
A. The authentication settings for the Client Receive connector.
B. The message delivery restrictions for Group1.
C. The moderation settings for Group1.
D. The remote IP address range for the Client Receive connector.
