Tag Archives: dnsbl

September 1, 2010
14:06
by: Dan

A DNSBL and Greylisting Hybrid Approach

I have long been a critic of greylisting as a method of reducing spam.  I recently broke down and implemented it on my servers after a couple of back-to-back blacklisting issues.  The problem with DNSBL blacklists is that even the … Continue reading →

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