Cisco Cisco Email Security Appliance X1070 User Guide
![Cisco](https://files.manualsbrain.com/attachments/7380d0050044647c30f5c24bbbf5d0c0b6d9bb84/common/fit/150/50/faa183d287233c52228cfea3dbc2a127fe780f60564fcb0955d9c3d1cd23/brand_logo.png)
C H A P T E R
3-1
Cisco AsyncOS 8.0.2 for Email User Guide
3
Setup and Installation
•
•
•
•
•
Installation Planning
Review Information That Impacts Planning Decisions
•
If you are configuring a virtual Email Security appliance, please see the Cisco Virtual Security
Appliance Installation Guide before continuing with this chapter.
Appliance Installation Guide before continuing with this chapter.
•
If you are configuring a Cisco M-Series appliance, please see
.
•
We recommend reviewing
before installing, as some
features and functions may affect the placement of the appliance within your infrastructure.
Plan to Place the Cisco Appliance at the Perimeter of Your Network
Your Email Security appliance is designed to serve as your SMTP gateway, also known as a mail
exchange (MX). For best results, some features require the appliance to be the first machine with an IP
address that is directly accessible to the Internet (that is, it is an external IP address) for sending and
receiving email.
exchange (MX). For best results, some features require the appliance to be the first machine with an IP
address that is directly accessible to the Internet (that is, it is an external IP address) for sending and
receiving email.
The per-recipient reputation filtering, anti-spam, anti-virus, and Virus Outbreak Filter features (see
, and
) are designed to work with a direct flow of
messages from the Internet and from your internal network. You can configure the appliance for policy
enforcement (
enforcement (
) for all email traffic
to and from your enterprise.