Cisco Cisco Email Security Appliance C160 Mode D'Emploi
C H A P T E R
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
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Anti-Spam
The IronPort appliance offers a unique, layered approach to stopping spam at the
email gateway. The first layer of spam control, reputation filtering (discussed
previously in
email gateway. The first layer of spam control, reputation filtering (discussed
previously in
) allows you to classify email
senders and restrict access to your email infrastructure based on senders’
trustworthiness as determined by the IronPort SenderBase™ Reputation Service.
The second layer of defense, scanning, is powered by IronPort Anti-Spam™ and
IronPort Intelligent Multi-Scan technology. Coupled together, reputation filtering
and anti-spam scanning offer the most effective and highest performing anti-spam
solution available today.
trustworthiness as determined by the IronPort SenderBase™ Reputation Service.
The second layer of defense, scanning, is powered by IronPort Anti-Spam™ and
IronPort Intelligent Multi-Scan technology. Coupled together, reputation filtering
and anti-spam scanning offer the most effective and highest performing anti-spam
solution available today.
Using the IronPort appliance, it is very easy to create policies to deliver messages
from known or highly reputable senders — such as customers and partners —
directly to the end user without any anti-spam scanning. Messages from unknown
or less reputable senders can be subjected to anti-spam 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 dropped based on your preferences.
from known or highly reputable senders — such as customers and partners —
directly to the end user without any anti-spam scanning. Messages from unknown
or less reputable senders can be subjected to anti-spam 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 dropped based on your preferences.
The unique, two-layer approach to fighting spam of the IronPort appliance
provides you with a powerful and unprecedented flexibility to manage and protect
your enterprise email gateway.
provides you with a powerful and unprecedented flexibility to manage and protect
your enterprise email gateway.
This chapter contains the following sections:
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