IronPort - Configuration Guide - AsyncOS 7.6.1

Chapter 5 Configuring the Gateway to Receive Email
HAT Variable Syntax
Using HAT Variables
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Table 5-3 HAT Mail Flow Policy Parameters (Continued)
Parameter Description
Envelope Sender DNS Verification
Exception Table
See Sender Verification, page 5-40.
Use Exception Table Use the sender verification domain exception table. You can only have
one exception table, but you can enable it per mail flow policy. See
Sender Verification Exception Table, page 5-43 for more information.
By default, these parameters are set to the following default values shown in Table 5-5 and Table 5-6 for
each listener on the appliance.
Note If anti-spam or anti-virus scanning is enabled globally in the HAT, messages are flagged for anti-spam
or anti-virus scanning as they are accepted by the Cisco IronPort appliance. If anti-spam or anti-virus
scanning is disabled after the message is accepted, the message will still be subject to scanning when it
leaves the work queue.
Table 5-4 defines a set of variables that can also be used in conjunction with the custom SMTP and Rate
Limiting banners defined for a Mail Flow Policy. Variable names are case-insensitive. (That is, $group
is equivalent to $Group.)
Table 5-4 HAT Variable Syntax
Variable Definition
$Group Replaced by the name of the sender group that was matched in the HAT. If the sender
group has no name, “None” is displayed.
$Hostname Replaced by the remote hostname if and only if is has been validated by the Cisco
IronPort appliance. If the reverse DNS lookup of the IP address is successful but
returns no hostname, then “None” is displayed. If the reverse DNS lookup fails (for
example, if the DNS server cannot be reached, or no DNS server has been configured)
then “Unknown” is displayed.
$OrgID Replaced by the SenderBase Organization ID (an integer value).
If the Cisco IronPort appliance cannot obtain a SenderBase Organization ID, or if the
SenderBase Reputation Service did not return a value, “None” is displayed.
$RemoteIP Replaced by the IP address of the remote client.
$HATEntry Replaced by the entry in the HAT that the remote client matched.
Note These variables can be used with the smtp_banner_text and max_rcpts_per_hour_text advanced HAT
parameters shown in Table 1-3 of the “Customizing Listeners” chapter in the Cisco IronPort AsyncOS
for Email Advanced Configuration Guide.
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
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