Tag: Open Relay

Test your mail server security infrastructure with Email Security Grader

Email Security Grader is a free online tool which helps IT and mail administrators evaluate the security of their mail infrastructure. The web site regroups several important tests (spam blacklist, open relay, mx records, smtp/pop3/imap authentication), educates users and makes recommendations for each aspect of email security. (Nov 01, 2010)

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Botnet Generated Spam

Botnets are networks of compromised machines that are under the command and control (C&C) of one entity - the botnet master. They are typically used for crimes such as denial-of-service attacks, identity thefts, phishing and, most commonly, for sending spam. Current botnets have easy-to-use HTML-based interfaces and can be rented out by spammers for their various spamming campaigns. Researchers reported that during 2008, 85% of spam was generated by six botnets (Mega-D, Srizibi, Storm, Rustock, Pushdo and Cutwail). (Nov 06, 2009)

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