>>818 Thank you for your res.
I think...
We must not delete each message. If they make a communications.
Our work is to defend communications.
Even if it is negative communications, we should defend.
So, we should delete SPAM.
At the same time, we should defend safety.
Therefore, we need the concept of "Important deletion".
So, we should delete private information and the attacked mail address.
It is very difficult to unite this two.
But, we should make an effort.