Cisco Cisco Email Security Appliance C190 Guía Del Usuario
Chapter 3 Setup and Installation
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
C10/100/150/160 Listener Example
Note
The following example of creating a listener applies to C10/100/150/160
customers only.
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
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.
a single host is 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 IronPort
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
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 IronPort
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
Use the listenerconfig->EDIT command to customize the listener.
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