Cisco AsyncOS 9.1 Email Security User Guide

About this manual

This guide provides step‑by‑step instructions for installing, configuring, and operating Cisco AsyncOS 9.1 on email security devices. It covers initial access via the web GUI or CLI, system setup, and integration with Active Directory.

The manual details mail pipeline components, host and recipient access tables, reputation filtering, content filtering, antivirus, anti‑spam, and burst‑filter features, along with troubleshooting and best‑practice recommendations. This manual is written in Chinese.

What's inside

• Getting Started with Email Security Appliance
• Accessing the Device (GUI & CLI)
• Setup and Installation
• Understanding the Mail Pipeline
• Configuring the Gateway to Receive Mail
• Sender Reputation Filtering
• Host Access Table (HAT) Management
• Recipient Access Table (RAT) Management
• Mail Filters and Policies
• Antivirus and Anti‑Spam Configuration

Specifications

Frequently asked questions

What is the purpose of the Host Access Table (HAT)?

The HAT defines which hosts are allowed to connect to the email security device.