white/blacklist using any header

Hi,
i saw a post about a new feature in an upcoming release that will allow 
you to whitelist based on any header in a message
i'd like to sugest that you could also blacklist using this interface
and specialy that you could use it with envelope headers too (like HELO)
the point of this is that I receive a lot o spam with a helo value of TmpStr
being able to mark this as spam and propagate this info would be a very good
to stop a lot of spam
thanks
	Caio Boiteux


      <-The Big Brother is Watching You->