Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
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Cisco AsyncOS 8.5 for Email User Guide
Chapter 3 Setup and Installation
Using the System Setup Wizard
C10/100/150/160 Listener Example
Note
The following example of creating a listener applies to C160/170 customers only.
In this example portion of the
systemsetup
command, a listener named MailInterface is configured to
run on the MailNet IP interface. Then, it is configured to accept all email for the domain
example.com
.
An initial SMTP route to the mail exchange
exchange.example.com
is configured. Then, the same
listener is configured to relay all email for all hosts within the domain
example.com
. (Note the dot at the
beginning of the entry:
.example.com
)
Rate limiting is enabled, and the maximum value of 450 recipients per hour from a single host is
specified for the public listener.
specified for the public listener.
Note
The value you enter for maximum recipients per hour you are willing to receive from a remote host is a
completely arbitrary value, one that is usually relative to the size of the enterprise for which you are
administering email. For example, a sender who sends 200 messages in an hour might be considered a
“spammer” (sender of unsolicited bulk email), but if you are configuring the appliance to handle all
email for a 10,000 person company, 200 messages per hour from a remote host may be a reasonable
value. Conversely, in a 50-person company, someone sending 200 messages in an hour to you may be an
obvious spammer. You must choose an appropriate value when you enable rate-limiting on a public
listener (throttle) inbound email for your enterprise. For more information on Default Host Access
policies, see
completely arbitrary value, one that is usually relative to the size of the enterprise for which you are
administering email. For example, a sender who sends 200 messages in an hour might be considered a
“spammer” (sender of unsolicited bulk email), but if you are configuring the appliance to handle all
email for a 10,000 person company, 200 messages per hour from a remote host may be a reasonable
value. Conversely, in a 50-person company, someone sending 200 messages in an hour to you may be an
obvious spammer. You must choose an appropriate value when you enable rate-limiting on a public
listener (throttle) inbound email for your enterprise. For more information on Default Host Access
policies, see
The default host access policy for the listener is then accepted.
Use the listenerconfig->EDIT command to customize the listener.
*****
You are now going to configure how the IronPort C10 accepts mail by creating a
"Listener".
Please create a name for this listener (Ex: "MailInterface"):
[]> MailInterface
Please choose an IP interface for this Listener.
1. MailNet (10.1.1.1/24: mail3.example.com)
2. Management (192.168.42.42/24: mail3.example.com)
[1]> 1
Enter the domain names or specific email addresses you want to accept mail for.