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4.2.5
Transport Agent
In this section you can enable or disable antivirus and antispyware protection by the transport agent. For Microsoft
Exchange Server 2007 and higher it is only possible to install a transport agent if the server is in one of two roles: Edge
Transport or Hub Transport.
If the message cannot be cleaned, you can delete it, send it to the quarantine mailbox or retain it.
If a threat is found, you can choose to write a spam score to the scanned message and specify the value (in %). Since
botnets are responsible for sending the majority of infected messages, the messages distributed this way are to be
categorized as spam. Write spam confidence level (SCL) to scanned messages based on spam score option (in Mail
server protection > Microsoft Exchange Server > Transport agent) must be enabled in order for this feature to work
effectively.
You can also choose to scan messages received from authenticated sources or local servers.
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