Disabling transport agent from Microsoft Exchange Server 2007
This article describes how you can disable or enable the content management features of Microsoft Exchange 2007 Transport Agent.
It is possible that the content filtering features of Microsoft Exchange Server 2007 drop e-mails that are considered spam or contain potentially malicious attachments. This is a feature of the Transport Agent included in Microsoft Exchange 2007.
You can disable content filtering functionality in individual computer configurations by using Exchange Management Console or Exchange Management Shell.