An email administrator is setting up a new Cisco ESA. The administrator wants to enable the blocking of greymail for the end user. Which feature must the administrator enable first?
Intelligent Multi-Scan (IMS) is a feature that enables the Cisco ESA to perform multiple anti-spam scans on each message and apply different actions based on the results. IMS also includes the Graymail Detection and Safe Unsubscribe services, which allow the ESA to identify and filter messages that are not strictly spam, but are low-priority or unwanted by the end user, such as newsletters, social media notifications, or marketing emails. The Graymail Detection service can classify messages into different categories, such as bulk, mass, or subscription, and assign different scores and verdicts to them. The Safe Unsubscribe service can provide a link for the end user to safely unsubscribe from the sender’s mailing list, without revealing their email address or opening a malicious URL. To enable the blocking of greymail for the end user, the administrator must first enable the IMS feature globally and then configure the Graymail and Safe Unsubscribe settings in the mail policies. The administrator can also enable the centralized spam quarantine and the end-user quarantine interface to allow the end user to manage their own quarantined messages. References :=
Best Practice Guide for Anti-Spam, Anti-Virus, Graymail and Outbreak Filters
Graymail Detection and Safe Unsubscribing Functionality
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