Alert: All IP Addresses Blacklisted

Sample BL-Monitor Report

In recent years some DNSBL server operators have taken the extreme action of blacklisting all IP addresses on the Internet.  This catastrophic situation will cause email filters to reject all messages.

BL-Monitor checks for this situation after  completing an IP query test session.  If one or more DNSBL servers have blacklisted all IP addresses while others do not, BL-Monitor displays an alert box.   As the sample shows, the server(s) doing the all-IP blacklisting are listed.

This alert is completely dependent upon:

	The quantity of IP addresses in your query session
	The source of the IP addresses

For example, if very few IP addresses are used by the BL-Monitor scan, the alert may not accurately indicate an all-IP blacklisting condition.

Also if the IP address source is an excerpt from the DNSBL server's blacklisted IP database, then all IPs being queried are blacklisted. 

BL-Monitor PRO automatically sends an email message to the designated administrator, allowing for unattended operation.

SAMPLE ALERT: ALL IP ADDRESSES BLACKLISTED