Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
1-27
Cisco IronPort AsyncOS 7.5 for Email Advanced Configuration Guide
OL-25137-01
Chapter 1 Customizing Listeners
Significant Bits HAT Policy Option
The HAT syntax allows for the signficant_bits configuration option. When editing
the default or a specific mail flow policy in a HAT (for example, when issuing the
the default or a specific mail flow policy in a HAT (for example, when issuing the
listenerconfig -> edit -> hostaccess -> default
command) the following
questions appear if:
•
rate limiting is enabled, and
–
using SenderBase for flow control is disabled, or
–
Directory Harvest Attack Prevention (DHAP) is enabled for a mail flow
policy (default or specific mail flow policy)
policy (default or specific mail flow policy)
For example:
Do you want to enable rate limiting per host? [N]> y
Enter the maximum number of recipients per hour from a remote host.
[]> 2345
Would you like to specify a custom SMTP limit exceeded response? [Y]>
n
Would you like to use SenderBase for flow control by default? [N]> n
Would you like to group hosts by the similarity of their IP
addresses? [N]> y
Enter the number of bits of IP address to treat as significant, from
0 to 32.
[24]>