Mail transport protection
SMTP server-level filtering by a transport agent provides protection such as antimalware, antispam, and user-defined rules. SMTP server-level filtering is performed before the scanned email arrives in the Microsoft Exchange Server mailbox.
Formerly known as Message filtering on the SMTP server level, the transport agent provides this protection and is only available for Microsoft Exchange Server 2013 or later versions operating in the Edge Transport Server or Hub Transport Server role. This scanning can be performed on a single server installation with multiple Exchange Server roles on one computer, as long as it has one of the mentioned server roles.
Mail transport protection is available for the following systems:
Exchange Server version and server role |
|||||
|---|---|---|---|---|---|
Microsoft Exchange Server 2013 (multiple roles) |
✓ |
✓ |
✓ |
✓ |
✓ |
Microsoft Exchange Server 2013 (Edge) |
✓ |
✓ |
✓ |
✓ |
✗ |
Microsoft Exchange Server 2013 (Mailbox) |
✓ |
✓ |
✓ |
✓ |
✓ |
Microsoft Exchange Server 2016 (Edge) |
✓ |
✓ |
✓ |
✓ |
✗ |
Microsoft Exchange Server 2016 (Mailbox) |
✓ |
✓ |
✓ |
✓ |
✓ |
Microsoft Exchange Server 2019 (Edge) |
✓ |
✓ |
✓ |
✓ |
✗ |
Microsoft Exchange Server 2019 (Mailbox) |
✓ |
✓ |
✓ |
✓ |
✓ |