We recently talked about the problems created by backscatter or bounce back spam. I.e. the pain caused by getting lots of "delivery failure" messages for messages that you never sent, but which arrive at your door anyway. One of the solutions we have provided for dealing with backscatter, if you have this problem, is to create a custom email filter in your LuxSci WebMail interface that will delete or save all bounce messages. While this works well, it also has a drawback.
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