Snowshoe spamming

Snowshoe spamming is a spamming technique in which the spammer uses a wide array of IP addresses in order to spread out the spam load. The large spread of IP addresses makes it difficult to identify and trap the spam, allowing at least some of it to reach email inboxes. For companies which specialize in trapping spam, snowshoe spamming is particularly noxious because it is difficult to trap it with traditional spam filters.