Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

You can configure a “domain map” for listeners. For each listener you configure, 
you can construct a domain map table which rewrites the Envelope Recipient for 
each recipient in a message that matches a domain in the domain map table. This 
feature is similar to the sendmail “Domain Table” or Postfix “Virtual Table” 
feature. Only the Envelope Recipient is affected; the “To:” headers are not 
re-written by this feature. 

The processing of the domain map feature happens immediately before the RAT 
and right after Default Domain is evaluated. Refer to “Understanding the Email 
Pipeline” in the Cisco IronPort AsyncOS for Email Configuration Guide.

A common implementation of the domain map feature is to accept incoming mail 
for more than one legacy domain. For example, if your company has acquired 
another company, you could construct a domain map on the Cisco IronPort 
appliance to accept messages for the acquired domain and rewrite the Envelope 
Recipients to your company’s current domain. 

You can configure up to 20,000 separate, unique domain mappings.

Only complete address 
for the right side

Complete address or 
fully-qualified domain 
name.