Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
C H A P T E R
6-1
Cisco AsyncOS 8.0.2 for Email User Guide
6
Reputation Filtering
•
•
•
•
Overview of Reputation Filtering
Reputation filtering is the first layer of spam protection, allowing you to control the messages that come
through the email gateway based on senders’ trustworthiness as determined by the Cisco SenderBase™
Reputation Service.
through the email gateway based on senders’ trustworthiness as determined by the Cisco SenderBase™
Reputation Service.
The Cisco appliance can accept messages from from known or highly reputable senders — such as
customers and partners — and deliver them directly to the end user without any content scanning.
Messages from unknown or less reputable senders can be subjected to content scanning, such as
anti-spam and anti-virus scanning, and you can also throttle the number of messages you are willing to
accept from each sender. Email senders with the worst reputation can have their connections rejected or
their messages bounced based on your preferences.
customers and partners — and deliver them directly to the end user without any content scanning.
Messages from unknown or less reputable senders can be subjected to content scanning, such as
anti-spam and anti-virus scanning, and you can also throttle the number of messages you are willing to
accept from each sender. Email senders with the worst reputation can have their connections rejected or
their messages bounced based on your preferences.
SenderBase Reputation Service
The Cisco SenderBase Reputation Service, using global data from the SenderBase Affiliate network,
assigns a SenderBase Reputation Score to email senders based on complaint rates, message volume
statistics, and data from public blacklists and open proxy lists. The SenderBase Reputation Score helps
to differentiate legitimate senders from spam sources. You can determine the threshold for blocking
messages from senders with low reputation scores.
assigns a SenderBase Reputation Score to email senders based on complaint rates, message volume
statistics, and data from public blacklists and open proxy lists. The SenderBase Reputation Score helps
to differentiate legitimate senders from spam sources. You can determine the threshold for blocking
messages from senders with low reputation scores.
The Cisco IronPort SenderBase Security Network website (
www.senderbase.org)
provides a global
overview of the latest email and web-based threats, displays current email traffic volume by country, and
allows you to look up reputation scores based on IP address, URI or Domain.
allows you to look up reputation scores based on IP address, URI or Domain.
Note
The SenderBase Reputation Service is only available with a current anti-spam feature key.
Related Topics
•