An open mail relay is an SMTP server configured in such a way that it allows anyone on the Internet to send e-mail through it, not just mail destined to or originating from known users. This used to be the default configuration in many mail servers; indeed, it was the way the Internet was initially set up, but open mail relays have become unpopular due to their exploitation by spammers and worms. Many relays were closed, or were placed on blacklists by other servers.
Read more about Open Mail Relay: History and Technology, Abuse By Spammers, Anti-spam Efforts, Modern-day Proponents, Closing Relays
Famous quotes containing the words open and/or mail:
“As to what we call the masses, and common men;Mthere are no common men. All men are at last of a size; and true art is only possible, on the conviction that every talent has its apotheosis somewhere. Fair play, and an open field, and freshest laurels to all who have won them!”
—Ralph Waldo Emerson (1803–1882)
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An easy Morning’s Ride—”
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