How to add X headers Spam score in email?

hi guys,

any idea how to add in email like this in email source

X-OutGoing-Spam-Status: No, score=-2.9

i try to change this line in the file '/etc/amavisd.conf'

$sa_tag_level_deflt  = -999;  # add spam info headers if at, or above that level

but is not working...

Please help.

no one knows