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SURBLSpam URI Realtime Blocklists
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In addition, SURBL lists require zero administration, are constantly updated and most of them are free to use.
org welcomes Policy Patrol's support for SURBL Lists: "As with any collaborative spam blocking method, the more widely SURBLs are used, the more effective they will be.
Prolexic attributes the SURBL and URIBL attacks to the Storm Botnet, which includes over one million PCs and is used mainly to send spam or provide fast-flux web/DNS hosting for stock scams, as well as compromised Linux machines.