OT: Error Code for Spam-Warnings

[Thomas Güttler]

Hi!

Off topic:

Aint there a error-code RFC for emails
which are created by spam filters?

Something like

X-Spam-detected: yes
X-Spam-scanner: ....

If there would be such a RFC, and 
virus checker implement this, mailman
could delete these messages, without
sending them to list.

By the way, this would be very handy for
"Unkown User, "Mailbox full" etc, too.