Quote:
Originally Posted by n5bb
There are various things which may be causing this. I noticed that the message headers you posted including “X-Backscatter: Yes”, which means that the Fastmail backscatter spam filter settings will affect your results.
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I think you may have "hit" his problem. Specifically just what are the Spam Protection's Backscatter setting(s)? Could it be set to "move"? That would certainly intercept any sieve code (filter rules) that follows.