Ah, thank you for pointing-out that the filter being applied has 4.5 for the tag2 level. It is the "Normal" filter that is being applied.
In Email -> Spamfilter -> User / Domain, the "Normal" filter has a priority of 5, and the "Auto-Delete Really Spammy Spam" filter has a priority of 10.
So, this all makes sense. The part I was missing is the Priority.
I have lowered the priority for the "Auto-Delete Really Spammy Spam" filter to 1 and expect that this will correct the issue.
My only question: is there any means by which to avoid having to double-check (and potentially change) the Priority value for every user to whom a new policy is applied?
To be clear, I would prefer that user-level policies always take precedence over domain-level policies.
Last edited by cbj4074; 9th January 2012 at 20:32.
Reason: Added clarification regarding question.