User Guide

CHAPTER

24-1

AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide

Configuring Routing and Delivery Features

• Routing Email for Local Domains, page 24-1

• Rewriting Addresses, page 24-6

• Creating Alias Tables, page 24-7

• Configuring Masquerading, page 24-16

• The Domain Map Feature, page 24-28

• Directing Bounced Email, page 24-35

• Controlling Email Delivery Using Destination Controls, page 24-42

• Bounce Verification, page 24-51

• Set Email Delivery Parameters, page 24-56

• Configuring Mail Gateways for all Hosted Domains Using Virtual Gateway™ Technology,

page 24-59

• Using Global Unsubscribe, page 24-69

Routing Email for Local Domains

In Chapter 5, “Configuring the Gateway to Receive Email” you customized private and public listeners

to service SMTP connections for an Enterprise Gateway configuration. Those listeners were customized

to handle specific connections (via HAT modification) and receive mail for specific domains (via RAT

modification of public listeners).

The appliance routes mail to local domains to hosts specified via the Network > SMTP Routes page (or

the

smtproutes command). This feature is similar to the sendmail mailertable feature.

Note If you have completed the GUI’s System Setup Wizard (or the Command Line Interface systemsetup

command) as described in the “Setup and Installation” chapter and committed the changes, you defined

the first SMTP route entries on the appliance for each RAT entry you entered at that time.