spam relay


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spam relay

Sending mail to a destination via a third-party mail server or proxy server in order to hide the address of the source of the mail. When email servers (SMTP servers) are used, it is known as an "open relay" or "SMTP relay," and this method was commonly used by spammers in the past when SMTP servers were not locked down. Today, most spam relay is provided by proxy servers and botnets. See spam, spam filter, botnet, open proxy server and MAPS.
References in periodicals archive ?
These not only allow the competitors to compete in such events as the Spam Toss, the Spam Cram and the Spam Relay, but also provide the justification for me putting this in my column.
Breaking down the spam relay from a continental viewpoint, Asia remains the top source for the global spam.
Companies and individuals that send spam e-mail often steal the identity of a PC user and create an anonymous spam relay.