http://www.spamhaus.org/sbl/index.lasso
Quote:
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The SBL is queriable in realtime by mail systems thoughout the Internet, allowing email administrators to identify, tag or block incoming connections from IP addresses which Spamhaus deems to be involved in the sending or origination of Unsolicited Bulk Email (aka "Spam").
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None, unless someone uses the info in their database as reason to block an IP?
