Cisco Cisco Email Security Appliance X1070 User Guide
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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
Chapter 24 Configuring Routing and Delivery Features
Controlling Email Delivery Using Destination Controls
You can define any of the following parameters for a domain in the configuration file. All parameters are
required for the
required for the
[DEFAULT]
section except for the
bounce_profile
parameter:
Table 24-9
Destination Control Configuration File Parameters
Parameter Name
Description
ip_sort_pref
Specifies the Internet Protocol version for the domain.
Enter one of the following values:
•
PREFER_V6
for “IPv6 Preferred”
•
REQUIRE_v6
for “IPv6 Required”
•
PREFER_V4
for “IPv4 Preferred”
•
REQUIRE_v4
for “IPv4 Required”
max_host_concurrency
The maximum number of outbound connections that will
be made by the appliance to a given host.
be made by the appliance to a given host.
If you define this parameter for a domain, the
limit_type
and
limit_apply
parameters must also be defined.
max_messages_per_connection
The maximum number of messages allowed for a single
outbound connection from the appliance to a given host
before initiating a new connection.
outbound connection from the appliance to a given host
before initiating a new connection.
recipient_minutes
The period of time — between 1 and 60 minutes — that the
appliance will count the number of recipients. Leave
undefined if no recipient limit should be applied.
appliance will count the number of recipients. Leave
undefined if no recipient limit should be applied.
recipient_limit
The maximum number of recipients allowed within the
given period of time. Leave undefined if no recipient limit
should be applied.
given period of time. Leave undefined if no recipient limit
should be applied.
If you define this parameter for a domain, the
recipient_minutes
,
limit_type
, and
limit_apply
parameters must also be defined.
limit_type
Specifies whether the limit will be applied to the entire
domain or to each mail exchange IP address specified for
that domain.
domain or to each mail exchange IP address specified for
that domain.
Enter one of the following values:
•
0
(or
host
) for the domain
•
1
(or
MXIP
) for the mail exchange IP address
limit_apply
Specifies whether the limit will be applied system-wide or
for each Virtual Gateway address.
for each Virtual Gateway address.
Enter one of the following values:
•
0
(or
system
) for system-wide
•
1
(or
VG
) for Virtual Gateway
bounce_validation
Specifies whether to turn on bounce validation address
tagging.
tagging.
Enter one of the following values:
•
0
(or
off
)
•
1
(or
on
)