No subject

It really doesn't matter whether you think that a blatent mistake is the cause, because in the time it's taken you to argue otherwise, you might just as well have sorted the prob, and moved on.

What does this give us?

The key gain, is in eliminating the question of "spam detection".

It's not about right or wrong. It is to totally eliminate "spam detection" from the equation.

ie. If there are 2 options here (if) - 1 being on the fly spam detection, 2 being pre-set blacklist..... by eliminating 1, it becomes very clear to all, where the problem lies.

This is sound engineering practice, and entirely normal in its application.
+ the email needs anyway sorting (cos it's wrong) so sorting it is not only good for the question at hand, but it's good house-keeping.
 [Wink]