Cisco Cisco Email Security Appliance C650 Guía Del Usuario
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Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 4 Understanding the Email Pipeline
Work Queue / Routing
•
archive the message
•
delete the message
Messages released from quarantines (see
) are scanned for viruses. See
for more information about Anti-Virus scanning.
File Reputation Scanning and File Analysis
You can configure the appliance to scan message attachments for emerging and targeted threats.
Available actions are similar to those for anti-virus scanning.
Available actions are similar to those for anti-virus scanning.
For more information, see
Content Filters
You can create content filters to be applied to messages on a per-recipient or per-sender basis. Content
filters are similar to message filters, except that they are applied later in the email pipeline — after a
message has been “splintered” into a number of separate messages for each matching Email Security
Manager policy. The functionality of content filters is applied after message filters processing and
anti-spam and anti-virus scanning have been performed on a message.
filters are similar to message filters, except that they are applied later in the email pipeline — after a
message has been “splintered” into a number of separate messages for each matching Email Security
Manager policy. The functionality of content filters is applied after message filters processing and
anti-spam and anti-virus scanning have been performed on a message.
For more information about Content Filters, see
.
Outbreak Filters
Cisco’s Outbreak Filters feature includes special filters that act proactively to provide a critical first layer
of defense against new outbreaks. Based on Outbreak Rules published by Cisco, messages with
attachments of specific filetypes can be sent to a quarantine named Outbreak.
of defense against new outbreaks. Based on Outbreak Rules published by Cisco, messages with
attachments of specific filetypes can be sent to a quarantine named Outbreak.
Messages in the Outbreak quarantine are processed like any other message in a quarantine. For more
information about quarantines and the Work Queue, see
information about quarantines and the Work Queue, see
.
See
for more information.
Quarantines
AsyncOS allows you to filter incoming or outgoing messages and place them into quarantines.
Quarantines are special queues or repositories used to hold and process messages. Messages in
quarantines can be delivered or deleted, based on how you configure the quarantine.
Quarantines are special queues or repositories used to hold and process messages. Messages in
quarantines can be delivered or deleted, based on how you configure the quarantine.
The following Work Queue features can send messages to quarantines:
•
Message Filters
•
Anti-Virus
•
Outbreak Filters
•
Content Filters
Messages released from quarantines are re-scanned for threats.
See the “Policy, Virus, and Outbreak Quarantines” chapter for more information.