An organization called contoso.com has Exchange Server 2010. @contoso.com e-mail
address suffix.
Anonymous and Authorization user can post to a Public Folder named Folder1 by sending email messages to folder1@contoso.com.
You need to prevent all users from posting content to folder 1, by sending e-mail. How
should you do this?

A.
Default receive connector

B.
Public folder management console

C.
Creating Transport Protection Rules

D.
In Exchange Management Console, modify properties of Public Folder database.