Why BlackList?

IP Blacklist is a database or list of IP addresses that should be blocked from connecting to a protected system. These blacklists (blocklists, blackhole lists, or DNSBL) are most commonly used by email receivers to screen out spam and other abusive emails flooding the Internet.

The best IP Blacklist use "honeypots" to detect new sources of abuse, and publish the source address within hours. Honeypots have addresses that are never used in a legitimate email, but are posted on various websites and other locations where criminals typically "harvest" addresses. IP blacklists are most useful in efficiently blocking high-volume and persistent sources. 

Every RBL Server has there own reasons and poicies to keep 1 ip in there databases. BUT herte we brings you some most common reason to get listed:

• Run dictionary attacks
• Mass mailings
• Spammers from IP's with no Reverse DNS
• Spammers from infected PC's (Dynamic or Generic Reverse DNS)
• Email Marketing Companies
• Compromised Servers
• And Many more...

Blacklist's Definitions and Reasons

What is IP Blacklist?

IP Blacklist blocks specific IP addresses (and IP ranges), message senders or message recipients (local mailboxes) as determined in the Blacklists. The IP Blacklist supports both IP addresses and subnet definitions. Addresses on the sender/recipient Blacklist can be defined by the address, simple wild carded mask or Perl-compatible regular expression. However, the problem with using an IP Blacklist is that it may cut off legitimate users trying to access site or blog or prevent them from sending email to users.

What is DNS Blacklist?

Domain Name Server (DNS) Black list is a list of IP addresses that are the source of unsolicited emails. By taking help of this list, system administrators can block unwanted domains. They refuse access to the server and prevent unwanted email messages. DNS Blacklists are usually maintained by anti-spam organizations or by individuals.

How a Email Blacklist?

Email Black lists contain known mail servers and addresses used by spammers. With these lists in place, access to the server can be denied and unwanted email messages are discarded. However, your legitimate emails may also be blocked.

Is there anything like Spam Blacklist?

Spam Blacklists are lists of mail servers or open relays known to be used by spammers to deliver unwanted email. By placing these lists in their mail transport agent's rules system, system administrators can block spam transmitted from these sources.

Difference between IP blockers & IP Blackholes?

IP Black Hole lists are large repositories of IP addresses that are known to be spamming. These repositories use various reporting mechanisms ranging from human reporting to spam-trap email boxes to determine who is sending spam, and when a spammer is identified by IP or IP block, the spammer is added to the Black Hole list. Other ISPs and email providers can configure their email servers to query the Black Hole list any time a new email comes in.