Most businesses are unhappy with the performance of their anti-spam technologies, a survey has found.The survey, entitled The Spam Index Report, found that most customers were not fully satisfied with the service they received from anti-spam vendors.Over 500 businesses were polled by IT consultants Brockmann & Company, with 40 percent of the respondents having IT responsibilities.Respondents found anti-spam services provided by ISPs to be the least effective of all solutions. Spam filters were found to be the next most ineffectual method of killing spam. Only 21 percent of respondents were “very satisfied” with their user-trained PC email client spam filters. Open-source and proprietary email client filters were almost equally ineffectual, according to the survey.
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