Domainmonster.com Glossary
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Web Design Glossary
Black and White Lists
A blacklist, sometimes called a deny list, is a list of email addresses, websites or IP addresses, mail from which the user has specified should be blocked or marked as spam. This can be useful if an individual is being harassed or bothered by a particular individual. However, because of the ease of acquiring free email addresses, and spammers' techniques for creating zombie
computers and spoofing
the sender addresses of their emails, blacklists are not really effective against most spam.
A whitelist, sometimes called an allow list, is a list of email addresses, websites or IP addresses, mail from which the user has specified should be allowed. If a user sets their email account to accept only emails from whitelisted senders, this is extremely effective against spam, because no unknown senders' emails will arrive in the inbox. However, for most users, this is not a viable option, because they will often need to accept emails from unknown contacts, such as registration emails for websites, or emails from new contacts.
Spam - Spam Bayesian Statistical Analysis Heuristics Rules-Based Analysis Distributed Checksum Clearinghouses Black and White Lists HTML Shield Technology Allow List Deny Delivery Junk Mail
Tag Subject Prepend Spam Virus Worm Phishing
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