Image Spam Bypasses Most Filters
As many of our customers are aware, some spammers have learned how to bypass spam filtering system by converting the entire message into an image. Normally the content of the message is analyzed and is one of the factors used to determine whether or not a message is spam. However, just as search engines cannot recognize text in an image, most spam filtering software cannot either. Our mail server vendor is aware of the issue and is currently working on methods for better identifying and trapping such messages.