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blackhole list

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- A blackhole list, sometimes simply referred to as a blacklist, is the publication of a group of ISP addresses known to be sources of spam, a type of e-mail more formally known as unsolicited commercial e-mail (UCE). The goal of a blackhole list is to provide a list of IP addresses that a network can use to filter out undesireable traffic. After filtering, traffic coming or going to an IP address on the list simply disappears, as if it were swallowed by an astronomical black hole. The Mail Abuse Prevention System (MAPS) Real-time Blackhole List (RBL), which has over 3000 entries, is one of the most popular blackhole lists. Begun as a personal project by Paul Vixie, it used by hundreds of servers around the world. Other popular blackhole lists include the Relay Spam Stopper and the Dialup User List.

Learn more about Spam and virus protection

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How to install Forefront Security for Exchange Server: Install Microsoft ForeFront Security for Exchange to use multiple virus scanning engines and better protect servers from new virus signatures and spam.
Block Web beacons and protect OWA users from spam: Microsoft Outlook blocks Web beacons by default; OWA doesn't. Certain Exchange Management Shell filtering commands can protect your OWA users from spam.
Controlling spam in Exchange 2007 at the edge transport server level: There are many ways to control spam and viruses in Exchange 2007. Do you know how they work? Eliminating spam at the right server level is essential.
Securing your Exchange Server 2007 journaling archives: With work, journaling can be used to archive email in Exchange Server 2007. Get an understanding of how to create a tamper-resistant journaling mailbox.
Microsoft Exchange Server security dos and don'ts: Securing Exchange Server against spam and viruses is a challenge. Follow these security practices to protect Exchange from various email security threats.

LAST UPDATED:

04 Jan 2005

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More resources from around the web:

-	Directions for subscribing to the Mail Abuse Prevention System's Relay Spam Stopper List can be found here.
-	Legal squabbles have forced at least one blackhole list to close.

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	How to install Forefront Security for Exchange Server Install Microsoft ForeFront Security for Exchange to use multiple virus scanning engines and better protect servers from new virus signatures and...
	Block Web beacons and protect OWA users from spam Microsoft Outlook blocks Web beacons by default; OWA doesn't. Certain Exchange Management Shell filtering commands can protect your OWA users from...
	Controlling spam in Exchange 2007 at the edge transport server level There are many ways to control spam and viruses in Exchange 2007. Do you know how they work? Eliminating spam at the right server level is essential.

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