Cisco Cisco Email Security Appliance C160 Mode D'Emploi
5-10
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
OL-25136-01
Chapter 5 Configuring the Gateway to Receive Email
Override SMTP Banner Host
Name
Name
By default, the appliance will include the hostname associated with the
interface of the listener when displaying the SMTP banner to remote
hosts (for example:
interface of the listener when displaying the SMTP banner to remote
hosts (for example:
220-
hostname
ESMTP
). You may choose to override
this banner by entering a different hostname here. Additionally, you
may leave the hostname field blank to choose not to display a hostname
in the banner.
may leave the hostname field blank to choose not to display a hostname
in the banner.
Rate Limit for Hosts
Max. Recipients per Hour
The maximum number of recipients per hour this listener will receive
from a remote host. The number of recipients per sender IP address is
tracked globally. Each listener tracks its own rate limiting threshold;
however, because all listeners validate against a single counter, it is
more likely that the rate limit will be exceeded if the same IP address
(sender) is connecting to multiple listeners.
from a remote host. The number of recipients per sender IP address is
tracked globally. Each listener tracks its own rate limiting threshold;
however, because all listeners validate against a single counter, it is
more likely that the rate limit will be exceeded if the same IP address
(sender) is connecting to multiple listeners.
Max. Recipients per Hour
Code
Code
The SMTP code returned when a host exceeds the maximum number of
recipients per hour defined for this listener.
recipients per hour defined for this listener.
Max. Recipients Per Hour
Exceeded Text
Exceeded Text
The SMTP banner text returned when a host exceeds the maximum
number of recipients per hour defined for this listener.
number of recipients per hour defined for this listener.
Rate Limit for Sender
Max. Recipients per Time
Interval
Interval
The maximum number of recipients during a specified time period that
this listener will receive from a unique envelope sender, based on the
mail-from address. The number of recipients is tracked globally. Each
listener tracks its own rate limiting threshold; however, because all
listeners validate against a single counter, it is more likely that the rate
limit will be exceeded if messages from the same mail-from address are
received by multiple listeners.
this listener will receive from a unique envelope sender, based on the
mail-from address. The number of recipients is tracked globally. Each
listener tracks its own rate limiting threshold; however, because all
listeners validate against a single counter, it is more likely that the rate
limit will be exceeded if messages from the same mail-from address are
received by multiple listeners.
Select whether to use the default maximum recipients, accept unlimited
recipients, or specify another maximum number of recipients.
recipients, or specify another maximum number of recipients.
Use the Default Mail Flow Policy settings to specify the maximum
number of recipients and the time interval that will be used by the other
mail flow policies by default. The time interval can only be specified
using the Default Mail Flow Policy.
number of recipients and the time interval that will be used by the other
mail flow policies by default. The time interval can only be specified
using the Default Mail Flow Policy.
Sender Rate Limit Exceeded
Error Code
Error Code
The SMTP code returned when an envelope exceeds the maximum
number of recipients for the time interval defined for this listener.
number of recipients for the time interval defined for this listener.
Sender Rate Limit Exceeded
Error Text
Error Text
The SMTP banner text returned when an envelope sender exceeds the
maximum number of recipients for the time interval defined for this
listener.
maximum number of recipients for the time interval defined for this
listener.
Exceptions
If you want certain envelope senders to be exempt from the defined rate
limit, select an address list that contains the envelope senders. See
limit, select an address list that contains the envelope senders. See
for more information.
Flow Control
Use SenderBase for Flow
Control
Control
Enable “look ups” to the Cisco IronPort SenderBase Reputation Service
for this listener.
for this listener.
Table 5-3
HAT Mail Flow Policy Parameters (Continued)
Parameter
Description