Cisco Cisco Email Security Appliance C170 Guía Del Usuario
Chapter 2 Configuring Routing and Delivery Features
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Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Mapping Messages to IP Interfaces for Delivery
The
altsrchost
command provides the simplest and most straightforward
method to segment each Cisco IronPort appliance into multiple IP interfaces
(Virtual Gateway addresses) from which to deliver email. However, users
requiring more power and flexibility in mapping messages to particular Virtual
Gateways should investigate the use of message filters. See
(Virtual Gateway addresses) from which to deliver email. However, users
requiring more power and flexibility in mapping messages to particular Virtual
Gateways should investigate the use of message filters. See
for more information.
The
altsrchost
command allows you to control which IP interface or interface
group to use during email delivery based on one of the following:
•
the sender’s IP address
•
the Envelope Sender address
To specify which IP interface or interface group the system will deliver email
from, you create mapping keys that pair either the sender’s IP address or the
Envelope Sender address to an IP interface or interface group (specified by
interface name or group name).
from, you create mapping keys that pair either the sender’s IP address or the
Envelope Sender address to an IP interface or interface group (specified by
interface name or group name).
IronPort AsyncOS will compare both the IP address and Envelope Sender address
to the mapping keys. If either the IP address or Envelope Sender address matches
one of the keys, the corresponding IP interface is used for the outbound delivery.
If there is no match, the default outbound interface will be used.
to the mapping keys. If either the IP address or Envelope Sender address matches
one of the keys, the corresponding IP interface is used for the outbound delivery.
If there is no match, the default outbound interface will be used.
The system can match any of the following keys and take preference in the
following order:
following order:
Sender’s IP address
The IP address of the sender must match exactly.
Example:
192.168.1.5
Fully-formed
Envelope Sender
Envelope Sender
The Envelope Sender must match the entire address exactly.
Example:
username@example.com
Username
The system will match username syntax against the
Envelope Sender address up to the
Envelope Sender address up to the
@
sign. The
@
sign must
be included. Example:
username@
Domain
The system will match domain name syntax against the
Envelope Sender address starting with the
Envelope Sender address starting with the
@
sign. The
@
sign
must be included. Example:
@example.com