Cisco Cisco Email Security Appliance C650 Guía Del Usuario
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User Guide for AsyncOS 9.8 for Cisco Email Security Appliances
Chapter 14 Managing Graymail
Configuring Graymail Detection and Safe Unsubscribing
Requirements for Graymail Detection and Safe Unsubscribing
•
For graymail detection, anti-spam scanning must be enabled globally. This can be either the IronPort
Anti-Spam or the Intelligent Multi-Scan feature. See
Anti-Spam or the Intelligent Multi-Scan feature. See
•
For safe unsubscribing,
–
Add the safe unsubscribing feature key.
–
The end user machines must be able to connect to the cloud-based Unsubscribe Service directly
over the Internet.
over the Internet.
Graymail Detection and Safe Unsubscribing in Cluster Configurations
You can enable Graymail Detection and Safe Unsubscribing at the machine, group or cluster level.
Enable Graymail Detection and Safe Unsubscribing
Before You Begin
Meet the
Procedure
Step 1
Click Security Services > Detection and Safe Unsubscribe.
Step 2
Click Edit Global Settings.
Step 3
Check Enable Graymail Detection.
Step 4
(Optional) To optimize the throughput of your appliance while still being able to scan increasingly larger
messages sent by graymail senders, configure the thresholds for message scanning:
messages sent by graymail senders, configure the thresholds for message scanning:
•
Maximum size of the message that you want the appliance to scan.
•
The number of seconds to wait for timeout when scanning a message.
Step 5
Check Enable Safe Unsubscribe.
Step 6
Submit and commit your changes.
To configure Graymail Detection and Safe Unsubscribing global settings in CLI, use the
graymailconfig
command. For more information, see CLI Reference Guide for AsyncOS for Cisco
Email Security Appliances.
Configuring the Incoming Mail Policy for Graymail Detection and Safe
Unsubscribing
Unsubscribing
Before You Begin