IronPort - Configuration Guide - AsyncOS 7.6.1

Reordering the HAT
5-36
Figure 5-22 Host Access Table Using SenderBase Reputation Scores
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
Chapter 5 Configuring the Gateway to Receive Email
The order of entries in a HAT is important. Remember that the HAT is read from top to bottom for each
host that attempts to connect to the listener. If a rule matches a connecting host, the action is taken for
that connection immediately.
For example, if you specify a CIDR block in Sender Group A (using policy 1) and create Sender Group
B for an IP address within that CIDR block, the policy in Sender Group B will never be applied.
Step 1 From the HAT Overview page, click Edit Order The Edit Sender Group Order page is displayed.
Step 2 Type the new order for existing rows of the HAT.
Step 3 Submit and commit your changes.
The HAT Overview page refreshes with the new order displayed.
In the following example shown in Figure 5-23, the order is being changed so that trusted senders are
processed first, blocked senders are processed next, and unknown or suspected senders are processed
last.
OL-25136-01