IronPort - advanced configuration guide

Contents
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SMTP Authentication via Second SMTP Server (SMTP Auth with Forwarding) 3-34
SMTP Authentication with LDAP 3-35
Enabling SMTP Authentication on a Listener 3-36
Outgoing SMTP Authentication 3-39
Logging and SMTP Authentication 3-40
Configuring External Authentication for Users 3-40
User Accounts Query 3-41
Group Membership Queries 3-41
Spam Quarantine End-User Authentication Queries 3-43
Sample Active Directory End-User Authentication Settings 3-43
Sample OpenLDAP End-User Authentication Settings 3-44
Spam Quarantine Alias Consolidation Queries 3-44
Sample Active Directory Alias Consolidation Settings 3-45
Sample OpenLDAP Alias Consolidation Settings 3-45
User Distinguished Name Queries 3-45
Sample User Distinguished Name Settings 3-46
Sample OpenLDAP User Distinguished Name Settings 3-46
Configuring AsyncOS To Work With Multiple LDAP Servers 3-46
Testing Servers and Queries 3-47
Failover 3-47
Configuring the Cisco IronPort Appliance for LDAP Failover 3-47
Load Balancing 3-48
Configuring the Cisco IronPort Appliance for Load Balancing 3-48
CHAPTER 4 Validating Recipients Using an SMTP Server 4-1
SMTP Call-Ahead Recipient Validation: Overview 4-1
Configuring SMTP Call-Ahead Recipient Validation 4-3
Configuring the Call-Ahead Server Profile 4-3
SMTP Call-Ahead Server Profile Settings 4-4
Call Ahead Server Responses 4-5
Enabling the SMTP Call-Ahead Server Profile on a Public Listener 4-6
Configuring LDAP Routing Query Settings 4-7
SMTP Call-Ahead Query Routing 4-8
Bypassing SMTP Call-Ahead Validation 4-9
CHAPTER 5 Email Authentication 5-1
Email Authentication Overview 5-1
DomainKeys and DKIM Authentication: Overview 5-2
Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
OL-25137-01