Tag: Dnsbl

Time to give up on GFI/SORBS?

A year ago, in november 2009, GFI Software acquired spam blocklist provider SORBS promising improvements to the responsiveness and data quality problems. Has anything changed? (Dec 03, 2010)

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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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Deep header inspection: use with caution

Some anti-spam tools will actually look at the reputation of IP addresses in each of the received headers of an email. Reputation mechanisms usually involve multiple sources, e.g., DNSBLs and Honeypot-driven reputation services. (Apr 19, 2010)

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What is a Honeypot in Email Security Terms?

A Honeypot is, by definition, a decoy or a trap whose purpose is to detect and identify unauthorized use in order to prevent breaches. In Email Security, a Honeypot is a SMTP server setup to process a single domain (or multiple domains) to gather emails all day long. (Dec 18, 2009)

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