THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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There's a ruleset to block joe-job, virus-blowback, and spam-blowback bounce messages (a.k.a. "backscatter"), which hopefully will be is included in SpamAssassin 3.2.0. In the meantime, if you are using SA 3.1.x, you can install it as follows:
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