McAfee Security for Microsoft Exchange 8.6.0

Transport scan settings

Transport scanning allows you to scan SMTP traffic before it enters the Exchange information store. SMTP Transport scanning can perform scanning of routed email messages that are not destined for the local server and can stop delivery of messages.

Option definitions
Option Definition
Enable Select to enable scanning at the Exchange Transport level. By default, this option is enabled.
This option will work only on Microsoft Exchange servers with Edge Transport, Hub Transport or Mailbox + Hub role.
Transport Scan Stamp Select to apply DAT signatures to the email header, so that the emails are not scanned again at the Mailbox role.

Recommended settings: If you have enabled Transport scan, make sure to enable this option as well.

Avoid scan of emails with size greater than Exclude emails from on-access scanning based on the size of an email. You can define the file size in KBs or MBs.
McAfee recommends that you scan all files before accessing it to prevent your systems from any potential threats.
Direction Based Scanning Configure on-access scan settings based on the email flow.
Scan Inbound Mails Select to scan any email message that comes into the Exchange server or Exchange organization.
Scan Outbound Mails Select to scan any email message that leaves your Exchange server or Exchange organization. Email messages are designated as outbound, if at least one recipient has an external email address.
Scan Internal Mails Select to scan email messages that are being routed from one location inside your domain to another location inside your domain. Anything within the Exchange server's Authoritative Domain is considered as an internal domain. Email messages are designated as internal if they originate from inside your domain and all the recipients are located inside your domain.