Your network contains an Active Directory forest. The forest contains two Active Directory sites named Site1 and Site2. You have a Microsoft Exchange Server 2019 organization that contains a database availability group (DAG) named DAG1. DAG1 has three member servers in each site. You need to prevent users from Site1 from sending email messages larger than 5 MB to the mailboxes in Site2. What should you do?
A. Modify the properties of the Active Directory site link.
B. From Site1, create a custom Send connector, and then modify the address space.
C. From Site2, create a custom Receive connector, and then modify the remote IP address range.
D. Modify the properties of DAG1.