Unfortunately US still worst spammer
According to Sophos more than one in four (26.4%) of spam detected between April - September originated in the US. South Korea was second with 19.8% and China third with 15.7%.
After these the remainer of the top 10 (in order) were: France, Brazil, Canada, Taiwan, Spain, Japan and the United Kingdom.
We have heard from several non-US ISP's that some US based ISP's are still blocking huge chunks of the Internet in a bid to reduce the amount of spam they receive. Although we would consider blocking entire netblocks is usually very heavy-handed (and often causes more problems than it fixes) it may also be worth focussing on their domestic customers and networks to help reduce the spam problem.
After these the remainer of the top 10 (in order) were: France, Brazil, Canada, Taiwan, Spain, Japan and the United Kingdom.
We have heard from several non-US ISP's that some US based ISP's are still blocking huge chunks of the Internet in a bid to reduce the amount of spam they receive. Although we would consider blocking entire netblocks is usually very heavy-handed (and often causes more problems than it fixes) it may also be worth focussing on their domestic customers and networks to help reduce the spam problem.
by anti-spam @ 6:24 PM [Link]
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