A N T I P R O X Y

• Obfuscation: In the world of spam, it is an attempt to hide data to prevent its detection.
• Because it is so cheap to send massive amounts of spam, a very low percentage of recipients have to respond for the advertiser to make money.
• To Quarantine an email is simply to isolate suspected spam or dangerous e-mails.
• An open Socks proxy is a security hole used by spammers to hide their originating IP address.
• Spam can made to appear to come from the Socks proxy instead of the actual origin.
• The hormel corporation has been pretty good-natured about the use of their trademark in discussions of on-line spam, even giving spamhaus permission to register spamhaus® as a trademark in europe.
• Administrators can specify the tests to be used by their local spamassassin installations, can vary these tests for each user, and can even write their own tests using a basic syntax plus regular expressions.
• Challenge Response: A spam-prevention system in which the first email contact from an unknown sender is bounced back with a "prove this is really you" message.
• Once the sender jumps through whatever hoop the challenge-response system requires, they are allowed to send mail to the recipient.
• Better c-r systems will queue the original message, and send it through once the sender has validated themself, saving the sender the trouble of retransmitting the message.
• A mail exchanger (MX) is the technical name for a mail host, the mail transfer agent officially designated within DNS to receive mail on behalf of users of a given domain.

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