Руководство Пользователя для Cisco Cisco Email Security Appliance C170
C H A P T E R
7-1
Cisco IronPort AsyncOS 7.5 for Email Configuration Guide
OL-25136-01
7
Reputation Filtering
The Cisco IronPort appliance offers a unique, layered approach to stopping spam
at the email gateway. The first layer of spam control, reputation filtering, allows
you to classify email senders and restrict access to your email infrastructure based
on senders’ trustworthiness as determined by the Cisco IronPort SenderBase™
Reputation Service. The second layer of defense (discussed in the next chapter),
scanning, is powered by IronPort Anti-Spam™ technology. Coupled together,
reputation filtering and anti-spam scanning offer the most effective and highest
performing anti-spam solution available today.
at the email gateway. The first layer of spam control, reputation filtering, allows
you to classify email senders and restrict access to your email infrastructure based
on senders’ trustworthiness as determined by the Cisco IronPort SenderBase™
Reputation Service. The second layer of defense (discussed in the next chapter),
scanning, is powered by IronPort Anti-Spam™ technology. Coupled together,
reputation filtering and anti-spam scanning offer the most effective and highest
performing anti-spam solution available today.
Using the Cisco 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 bounced based on your preferences.
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 bounced based on your preferences.
The unique, two-layer approach to fighting spam of the Cisco 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:
•
•
The following chapter, Anti-Spam, discusses the anti-spam scanning engine in
detail.
detail.