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  • Using RBLs for email security can bite when you least expect

      A situation that arose today illustrates the problematic nature of RBL use for spam filtering: A business owner who had been using the same email address to correspond with a client for the past seven years suddenly got a bounceback message from that client stating that she is being blocked by a public blacklist (SORBS). Further research ...
    Posted to MX Watch (Weblog) by admin on December 19, 2006
  • SORBS back in a big way!

    The past week's requests for assistance with blacklist problems have shown an unusual increase in bounceback messages from recipients stating that SORBS has identified spam coming from their specific mail servers. Meanwhile, the ongoing scenario of static IPs being mis-identified as dynamic continues to cause frustration. In fact, nearly 50% of ...
    Posted to MX Watch (Weblog) by admin on August 8, 2006