Intrusion Prevention

Selecting the Intrusion Prevention tab presents you with a list of IP addresses that have been blocked by the Intrusion Prevention function, along with the Expires (date/time) that the block will expire.

Figure. Intrusion Prevention tab.

Field

Description

Refresh

Click this button to refresh the list.

Add

Click this button to add an IP address to the list. The Tarpitted IPs dialog is shown. Specify the IP address here. CIDR notation/ranges can be used.

Note: The expiration time will be calculated according to your Antispam settings.

Remove

Click this button to remove the selected IP address(es).

Remove All Expired

Click this button to have all expired IP addresses deleted from the queue.

Remove All

Click this button to have all IP addresses removed from the queue.

Intrusion Prevention Reason Codes

Reason Code

Explanation

C

Tarpitting invoked via Content Filters

I

IP blocked for exceeding connections in one minute

M

IP blocked for delivering oversized message

R

IP blocked for exceeding RSET command count

D

IP blocked for being listed on DNSBL

A

The account that this message was sent to was a "tarpit" account so the sending IP is tarpitted

P

IP blocked for exceeding unknown user delivery count

U

IP blocked manually via console

S

IP blocked for exceeding spam score in a message

Y

IP blocked for relaying

L

IP blocked for too many failed login attempts