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Submission + - Cisco blocks thousands of legit IPs by mistake (

littlekorea writes: A very large quantity of outbound emails from legitimate IP addresses have been mistakenly blocked by the Cisco IronPort (SenderBase) web reputation service this week. Cisco engineers have confirmed a misconfiguration over the weekend caused the SenderBase service to give poor reputations to many businesses, particularly those using shared web servers or connecting small business server to a local ISP.
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Cisco blocks thousands of legit IPs by mistake

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