Your network contains an Active Directory forest named contoso.com. The forest contains four sites named Site1, Site2, Site3, and Site4. You have an Exchange Server 2013 organization that contains several servers in each site. You need to prevent users who have mailboxes in Site2 from sending email messages that are larger than 2 MB to recipients in Site3. What should you do?
A. Modify the attributes of the Active Directory IP site line between Site 2 and Site 3
B. Create a custom Send connector that has all mailboxes servers from Site 2 as source servers.
C. Create a custom Receive connector that has the remote IP address range of Site 2.
D. Modify the attributes of the Active Directory SMTP site link between Site 2 and Site 3.