User Guide

Contents
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Configuration Scenarios 3-5
Preparing for System Setup 3-8
Determine Method for Connecting to the Appliance 3-8
Determining Network and IP Address Assignments 3-9
Gathering the Setup Information 3-11
Using the System Setup Wizard 3-14
Accessing the Web-Based Graphical User Interface (GUI) 3-15
Defining Basic Configuration Using the Web-Based System Setup Wizard 3-16
Setting up the Connection to Active Directory 3-24
Proceeding to the Next Steps 3-24
Accessing the Command Line Interface (CLI) 3-25
Running the Command Line Interface (CLI) System Setup Wizard 3-25
Configuring your system as an Enterprise Gateway 3-39
Verifying Your Configuration and Next Steps 3-39
CHAPTER 4 Understanding the Email Pipeline 4-1
Overview of the Email Pipeline 4-1
Email Pipeline Flows 4-1
Incoming / Receiving 4-4
Host Access Table (HAT), Sender Groups, and Mail Flow Policies 4-5
Received: Header 4-5
Default Domain 4-5
Bounce Verification 4-5
Domain Map 4-6
Recipient Access Table (RAT) 4-6
Alias Tables 4-6
LDAP Recipient Acceptance 4-6
SMTP Call-Ahead Recipient Validation 4-6
Work Queue / Routing 4-7
Email Pipeline and Security Services 4-7
LDAP Recipient Acceptance 4-7
Masquerading or LDAP Masquerading 4-8
LDAP Routing 4-8
Message Filters 4-8
Email Security Manager (Per-Recipient Scanning) 4-8
Quarantines 4-10
Delivery 4-10
Virtual gateways 4-11
Delivery Limits 4-11