Cisco Cisco Email Security Appliance C680 Guida Utente

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Cisco IronPort AsyncOS 7.3 for Email Configuration Guide
OL-23078-01
Chapter 5      Configuring the Gateway to Receive Email
, senders with a SenderBase Reputation Score less than -7.5 are 
blocked using the BLOCKED mail flow policy. 
Figure 5-20
Creating a Sender Group with SenderBase Reputation Scores 
(1) 
, senders with a SenderBase Reputation Score greater than 8.0 
bypass the anti-spam scanning for the listener: