Cisco Cisco Email Security Appliance C160 Mode D'Emploi
Chapter 2 Configuring Routing and Delivery Features
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Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
Rewriting Addresses
AsyncOS provides several methods for rewriting Envelope Sender and Recipient
addresses in the email pipeline. Rewriting addresses can be used, for example, to
redirect mail sent to a partner domain or to hide (“mask”) your internal
infrastructure.
addresses in the email pipeline. Rewriting addresses can be used, for example, to
redirect mail sent to a partner domain or to hide (“mask”) your internal
infrastructure.
and recipient email addresses.
Table 2-1
Methods for Rewriting Addresses
Original
Address
Address
Change to
Feature
Works on
*@anydomain
user@domain
Alias Tables (see
)
•
Envelope Recipients
only
only
•
Applied globally
•
Maps aliases to
email addresses or
other aliases
email addresses or
other aliases
*@olddomain
*@newdomain
Domain Mapping
(see
(see
)
•
Envelope Recipients
only
only
•
Applied per listener
*@olddomain
*@newdomain
Masquerading (see
)
•
Envelope Sender and
the To:, From:,
and/or CC: headers
the To:, From:,
and/or CC: headers
•
Applied per listener
Creating Alias Tables
Alias tables provide a mechanism to redirect messages to one or more recipients.
You can construct a mapping table of aliases to usernames and other aliases in a
similar fashion to the
You can construct a mapping table of aliases to usernames and other aliases in a
similar fashion to the
/etc/mail/aliases
feature of a sendmail configuration on
some Unix systems.