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whitelist

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- A whitelist is a list of e-mail addresses or domain names from which an e-mail blocking program will allow messages to be received. E-mail blocking programs, also called a spam filters, are intended to prevent most unsolicited e-mail messages (spam) from appearing in subscriber inboxes. But these programs are not perfect. Cleverly crafted spam gets through, and a few desired messages are blocked. Most Internet users can tolerate the occasional unsolicited e-mail advertisement that a spam filter misses, but are concerned by the thought that an important message might not be received. The whitelist option is a solution to the latter problem. The list can be gradually compiled over a period of time, and can be edited whenever the user wants.

Some spam filters delete suspected junk e-mail messages straightaway, but others allow the user to place them in a quarantined inbox. Periodically, the quarantined messages are observed to see if any of them are legitimate messages. This option is used by some Web-based e-mail clients in place of, or in addition to, a whitelist.

Also see blacklist.

Learn more about Spam and virus protection

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.
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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RELATED CONTENT

	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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whitelist Solutions - Microsoft Exchange White Papers

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