Sophos has published its latest survey of the top 12 spam-relaying countries in the first quarter of 2007, and the UK falls outside the chart.
The internet security firm scanned all spam messages received in thecompany's global network of spamtraps.
The exercise once again showed the US relayed considerably more spam than other nations, with just under a fifth (19.8%) of the world's junk e-mails originating from US-based computers.
Sophos charted the ascendancy of Poland in the dirty dozen - with the country now in third place.
Russia, India and Italy in the chart all debut in the 2007 chart.
The UK, which sat in tenth place during the first quarter of 2006, has managed to bypass being named and shamed, occupying 13th place and accounting for 2.2% of all spam relayed.
According to Sophos, the overall volume of spam rose by around 4.2% during the first quarter of 2007, when compared to the same period in 2006.
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