Spam and Open Relay Blocking System

What Does Spam and Open Relay Blocking System Mean?

The Spam and Open Relay Blocking System (SORBS) is an anti-spam project that inspects servers from which emails are received to check whether the emails were sent from proxy or open-relay servers. SORBS was developed in 2002 and shared with the public the following year.


Techopedia Explains Spam and Open Relay Blocking System

SORBS tests systems to ascertain whether they contain open proxies, open relays, etc. (Open relay servers are configured to permit anyone on the Internet to send emails via the server.) SORBS aims not to exploit servers during the testing process. It does not actually block websites or emails, but rather lists their hostnames.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…