yahoo anti spam ...

YAHOO DEBUTS NEW ANTISPAM TOOL
Yahoo this week released a new e-mail standard called DomainKeys that
aims to limit spam by preventing spammers from spoofing return
addresses. The problem of spam has grown to the point that large ISPs
block as many as 2.5 billion e-mails daily that are identified as spam,
much of it pretending to come from a legitimate return address that did
not send the message. Yahoo's approach would embed an encrypted key in
outgoing e-mail messages that matches a key on the server that sent the
messages. E-mail providers could easily check to see if the keys match,
and, if not, those message could then be blocked. The DomainKeys
standard could also help fight "phishing," which tricks computer users
into divulging personal information by sending e-mail that pretends to
come from an online retailer or service, such as Citigroup or eBay. The
messages tell recipients that the business needs certain information,
such as credit card numbers or Social Security numbers, to complete an
order or update its records.
Wired News, 18 May 2004
http://www.wired.com/news/business/0,1367,63513,00.html

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